86213793 has 4 divisors (see below), whose sum is σ = 114951728. Its totient is φ = 57475860.

The previous prime is 86213761. The next prime is 86213861. The reversal of 86213793 is 39731268.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 86213793 - 2⁵ = 86213761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86213713) 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, 14368963 + ... + 14368968.

It is an arithmetic number, because the mean of its divisors is an integer number (28737932).

Almost surely, 2^86213793 is an apocalyptic number.

It is an amenable number.

86213793 is a deficient number, since it is larger than the sum of its proper divisors (28737935).

86213793 is a wasteful number, since it uses less digits than its factorization.

86213793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28737934.

The product of its digits is 54432, while the sum is 39.

The square root of 86213793 is about 9285.1382865308. The cubic root of 86213793 is about 441.7659623113.

The spelling of 86213793 in words is "eighty-six million, two hundred thirteen thousand, seven hundred ninety-three".