87997912 has 32 divisors (see below), whose sum is σ = 169413120. Its totient is φ = 42831520.

The previous prime is 87997901. The next prime is 87997913. The reversal of 87997912 is 21979978.

It is a self number, because there is not a number n which added to its sum of digits gives 87997912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87997913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84837 + ... + 85867.

It is an arithmetic number, because the mean of its divisors is an integer number (5294160).

Almost surely, 2^87997912 is an apocalyptic number.

It is an amenable number.

87997912 is a deficient number, since it is larger than the sum of its proper divisors (81415208).

87997912 is a wasteful number, since it uses less digits than its factorization.

87997912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311 (or 1307 counting only the distinct ones).

The product of its digits is 571536, while the sum is 52.

The square root of 87997912 is about 9380.7202282128. The cubic root of 87997912 is about 444.7925001539.

The spelling of 87997912 in words is "eighty-seven million, nine hundred ninety-seven thousand, nine hundred twelve".