86964139 has 4 divisors (see below), whose sum is σ = 87649024. Its totient is φ = 86279256.

The previous prime is 86964133. The next prime is 86964151. The reversal of 86964139 is 93146968.

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 86964139 - 2¹⁷ = 86833067 is a prime.

It is a super-2 number, since 2×86964139² = 15125522944022642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86964133) 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, 342252 + ... + 342505.

It is an arithmetic number, because the mean of its divisors is an integer number (21912256).

Almost surely, 2^86964139 is an apocalyptic number.

86964139 is a deficient number, since it is larger than the sum of its proper divisors (684885).

86964139 is a wasteful number, since it uses less digits than its factorization.

86964139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684884.

The product of its digits is 279936, while the sum is 46.

The square root of 86964139 is about 9325.4565035713. The cubic root of 86964139 is about 443.0438718871.

The spelling of 86964139 in words is "eighty-six million, nine hundred sixty-four thousand, one hundred thirty-nine".