86442313 has 2 divisors, whose sum is σ = 86442314. Its totient is φ = 86442312.

The previous prime is 86442299. The next prime is 86442319. The reversal of 86442313 is 31324468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53758224 + 32684089 = 7332^2 + 5717^2 .

It is a cyclic number.

It is not a de Polignac number, because 86442313 - 2⁹ = 86441801 is a prime.

It is not a weakly prime, because it can be changed into another prime (86442319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43221156 + 43221157.

It is an arithmetic number, because the mean of its divisors is an integer number (43221157).

Almost surely, 2^86442313 is an apocalyptic number.

It is an amenable number.

86442313 is a deficient number, since it is larger than the sum of its proper divisors (1).

86442313 is an equidigital number, since it uses as much as digits as its factorization.

86442313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 31.

The square root of 86442313 is about 9297.4358293026. The cubic root of 86442313 is about 442.1559358483.

The spelling of 86442313 in words is "eighty-six million, four hundred forty-two thousand, three hundred thirteen".