86072879 has 4 divisors (see below), whose sum is σ = 87040080. Its totient is φ = 85105680.

The previous prime is 86072843. The next prime is 86072881. The reversal of 86072879 is 97827068.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86072879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86077879) 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, 483467 + ... + 483644.

It is an arithmetic number, because the mean of its divisors is an integer number (21760020).

Almost surely, 2^86072879 is an apocalyptic number.

86072879 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

86072879 is a deficient number, since it is larger than the sum of its proper divisors (967201).

86072879 is an equidigital number, since it uses as much as digits as its factorization.

86072879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967200.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 86072879 is about 9277.5470357202. The cubic root of 86072879 is about 441.5251464151.

The spelling of 86072879 in words is "eighty-six million, seventy-two thousand, eight hundred seventy-nine".