87447906 has 96 divisors (see below), whose sum is σ = 235243008. Its totient is φ = 22861440.

The previous prime is 87447859. The next prime is 87447907. The reversal of 87447906 is 60974478.

It is not an unprimeable number, because it can be changed into a prime (87447907) 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 47 ways as a sum of consecutive naturals, for example, 322551 + ... + 322821.

It is an arithmetic number, because the mean of its divisors is an integer number (2450448).

Almost surely, 2^87447906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87447906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117621504).

87447906 is an abundant number, since it is smaller than the sum of its proper divisors (147795102).

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

87447906 is a wasteful number, since it uses less digits than its factorization.

87447906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 87447906 is about 9351.3585109331. The cubic root of 87447906 is about 443.8638796266.

The spelling of 87447906 in words is "eighty-seven million, four hundred forty-seven thousand, nine hundred six".