86974893 has 6 divisors (see below), whose sum is σ = 125630414. Its totient is φ = 57983256.

The previous prime is 86974883. The next prime is 86974897. The reversal of 86974893 is 39847968.

It can be written as a sum of positive squares in only one way, i.e., 86825124 + 149769 = 9318^2 + 387^2 .

It is not a de Polignac number, because 86974893 - 2⁸ = 86974637 is a prime.

It is a super-2 number, since 2×86974893² = 15129264024722898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86974897) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4831930 + ... + 4831947.

Almost surely, 2^86974893 is an apocalyptic number.

It is an amenable number.

86974893 is a deficient number, since it is larger than the sum of its proper divisors (38655521).

86974893 is a wasteful number, since it uses less digits than its factorization.

86974893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9663883 (or 9663880 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 86974893 is about 9326.0330795038. The cubic root of 86974893 is about 443.0621334276.

The spelling of 86974893 in words is "eighty-six million, nine hundred seventy-four thousand, eight hundred ninety-three".