86918964 has 24 divisors (see below), whose sum is σ = 221248608. Its totient is φ = 26339040.

The previous prime is 86918929. The next prime is 86918969. The reversal of 86918964 is 46981968.

It is a happy number.

86918964 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

86918964 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86918969) 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 7 ways as a sum of consecutive naturals, for example, 329107 + ... + 329370.

It is an arithmetic number, because the mean of its divisors is an integer number (9218692).

Almost surely, 2^86918964 is an apocalyptic number.

It is an amenable number.

86918964 is an abundant number, since it is smaller than the sum of its proper divisors (134329644).

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

86918964 is a wasteful number, since it uses less digits than its factorization.

86918964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658495 (or 658493 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 86918964 is about 9323.0340554993. The cubic root of 86918964 is about 442.9671430432.

The spelling of 86918964 in words is "eighty-six million, nine hundred eighteen thousand, nine hundred sixty-four".