84395970 has 48 divisors (see below), whose sum is σ = 228975552. Its totient is φ = 21526560.

The previous prime is 84395963. The next prime is 84396029. The reversal of 84395970 is 7959348.

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

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 18316 + ... + 22455.

It is an arithmetic number, because the mean of its divisors is an integer number (4770324).

Almost surely, 2^84395970 is an apocalyptic number.

84395970 is an abundant number, since it is smaller than the sum of its proper divisors (144579582).

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

84395970 is a wasteful number, since it uses less digits than its factorization.

84395970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40807 (or 40804 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 84395970 is about 9186.7279267430. The cubic root of 84395970 is about 438.6389935159.

The spelling of 84395970 in words is "eighty-four million, three hundred ninety-five thousand, nine hundred seventy".