86921134 has 4 divisors (see below), whose sum is σ = 130381704. Its totient is φ = 43460566.

The previous prime is 86921099. The next prime is 86921141. The reversal of 86921134 is 43112968.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 86921134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21730282 + ... + 21730285.

It is an arithmetic number, because the mean of its divisors is an integer number (32595426).

Almost surely, 2^86921134 is an apocalyptic number.

86921134 is a deficient number, since it is larger than the sum of its proper divisors (43460570).

86921134 is a wasteful number, since it uses less digits than its factorization.

86921134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43460569.

The product of its digits is 10368, while the sum is 34.

The square root of 86921134 is about 9323.1504331959. The cubic root of 86921134 is about 442.9708293531.

The spelling of 86921134 in words is "eighty-six million, nine hundred twenty-one thousand, one hundred thirty-four".