94971690 has 288 divisors, whose sum is σ = 313709760. Its totient is φ = 20528640.

The previous prime is 94971689. The next prime is 94971691. The reversal of 94971690 is 9617949.

It is an interprime number because it is at equal distance from previous prime (94971689) and next prime (94971691).

It is a super-2 number, since 2×94971690² = 18039243802912200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94971691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4998501 + ... + 4998519.

It is an arithmetic number, because the mean of its divisors is an integer number (1089270).

Almost surely, 2^94971690 is an apocalyptic number.

94971690 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 94971690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156854880).

94971690 is an abundant number, since it is smaller than the sum of its proper divisors (218738070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

94971690 is a wasteful number, since it uses less digits than its factorization.

94971690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 94971690 is about 9745.3419642412. The cubic root of 94971690 is about 456.2449342028.

The spelling of 94971690 in words is "ninety-four million, nine hundred seventy-one thousand, six hundred ninety".