86121908 has 12 divisors (see below), whose sum is σ = 158645760. Its totient is φ = 40794552.

The previous prime is 86121869. The next prime is 86121941. The reversal of 86121908 is 80912168.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566516 + ... + 566667.

It is an arithmetic number, because the mean of its divisors is an integer number (13220480).

Almost surely, 2^86121908 is an apocalyptic number.

It is an amenable number.

86121908 is a deficient number, since it is larger than the sum of its proper divisors (72523852).

86121908 is a wasteful number, since it uses less digits than its factorization.

86121908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133206 (or 1133204 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 86121908 is about 9280.1890066959. The cubic root of 86121908 is about 441.6089646385.

The spelling of 86121908 in words is "eighty-six million, one hundred twenty-one thousand, nine hundred eight".