86978794 has 16 divisors (see below), whose sum is σ = 152744256. Its totient is φ = 36367200.

The previous prime is 86978761. The next prime is 86978807. The reversal of 86978794 is 49787968.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75192 + ... + 76339.

It is an arithmetic number, because the mean of its divisors is an integer number (9546516).

Almost surely, 2^86978794 is an apocalyptic number.

86978794 is a deficient number, since it is larger than the sum of its proper divisors (65765462).

86978794 is a wasteful number, since it uses less digits than its factorization.

86978794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151581.

The product of its digits is 6096384, while the sum is 58.

The square root of 86978794 is about 9326.2422228891. The cubic root of 86978794 is about 443.0687574064.

The spelling of 86978794 in words is "eighty-six million, nine hundred seventy-eight thousand, seven hundred ninety-four".