86929291 has 4 divisors (see below), whose sum is σ = 87226272. Its totient is φ = 86632312.

The previous prime is 86929289. The next prime is 86929321. The reversal of 86929291 is 19292968.

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

It is a cyclic number.

It is not a de Polignac number, because 86929291 - 2¹ = 86929289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86929201) 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, 148051 + ... + 148636.

It is an arithmetic number, because the mean of its divisors is an integer number (21806568).

Almost surely, 2^86929291 is an apocalyptic number.

86929291 is a deficient number, since it is larger than the sum of its proper divisors (296981).

86929291 is a wasteful number, since it uses less digits than its factorization.

86929291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296980.

The product of its digits is 139968, while the sum is 46.

The square root of 86929291 is about 9323.5878823552. The cubic root of 86929291 is about 442.9846855921.

The spelling of 86929291 in words is "eighty-six million, nine hundred twenty-nine thousand, two hundred ninety-one".