87239958772 has 12 divisors (see below), whose sum is σ = 153308715840. Its totient is φ = 43437468536.

The previous prime is 87239958761. The next prime is 87239958787. The reversal of 87239958772 is 27785993278.

It is a super-2 number, since 2×87239958772² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87239958698 and 87239958707.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 45626638 + ... + 45628549.

It is an arithmetic number, because the mean of its divisors is an integer number (12775726320).

Almost surely, 2^87239958772 is an apocalyptic number.

It is an amenable number.

87239958772 is a deficient number, since it is larger than the sum of its proper divisors (66068757068).

87239958772 is a wasteful number, since it uses less digits than its factorization.

87239958772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91255430 (or 91255428 counting only the distinct ones).

The product of its digits is 106686720, while the sum is 67.

The spelling of 87239958772 in words is "eighty-seven billion, two hundred thirty-nine million, nine hundred fifty-eight thousand, seven hundred seventy-two".