86713409 has 2 divisors, whose sum is σ = 86713410. Its totient is φ = 86713408.

The previous prime is 86713399. The next prime is 86713433. The reversal of 86713409 is 90431768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77880625 + 8832784 = 8825^2 + 2972^2 .

It is a cyclic number.

It is not a de Polignac number, because 86713409 - 2⁸ = 86713153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86713439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43356704 + 43356705.

It is an arithmetic number, because the mean of its divisors is an integer number (43356705).

Almost surely, 2^86713409 is an apocalyptic number.

It is an amenable number.

86713409 is a deficient number, since it is larger than the sum of its proper divisors (1).

86713409 is an equidigital number, since it uses as much as digits as its factorization.

86713409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 86713409 is about 9312.0034901196. The cubic root of 86713409 is about 442.6176758329.

The spelling of 86713409 in words is "eighty-six million, seven hundred thirteen thousand, four hundred nine".