86944957 has 4 divisors (see below), whose sum is σ = 94849056. Its totient is φ = 79040860.

The previous prime is 86944943. The next prime is 86944961. The reversal of 86944957 is 75944968.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86944957 - 2⁷ = 86944829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86944997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3952033 + ... + 3952054.

It is an arithmetic number, because the mean of its divisors is an integer number (23712264).

Almost surely, 2^86944957 is an apocalyptic number.

It is an amenable number.

86944957 is a deficient number, since it is larger than the sum of its proper divisors (7904099).

86944957 is a wasteful number, since it uses less digits than its factorization.

86944957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7904098.

The product of its digits is 2177280, while the sum is 52.

The square root of 86944957 is about 9324.4279717310. The cubic root of 86944957 is about 443.0112948863.

The spelling of 86944957 in words is "eighty-six million, nine hundred forty-four thousand, nine hundred fifty-seven".