86409577 has 2 divisors, whose sum is σ = 86409578. Its totient is φ = 86409576.

The previous prime is 86409569. The next prime is 86409607. The reversal of 86409577 is 77590468.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53816896 + 32592681 = 7336^2 + 5709^2 .

It is a cyclic number.

It is not a de Polignac number, because 86409577 - 2³ = 86409569 is a prime.

It is a super-2 number, since 2×86409577² = 14933229994637858, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86409517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43204788 + 43204789.

It is an arithmetic number, because the mean of its divisors is an integer number (43204789).

Almost surely, 2^86409577 is an apocalyptic number.

It is an amenable number.

86409577 is a deficient number, since it is larger than the sum of its proper divisors (1).

86409577 is an equidigital number, since it uses as much as digits as its factorization.

86409577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 86409577 is about 9295.6751771993. The cubic root of 86409577 is about 442.1001134786.

The spelling of 86409577 in words is "eighty-six million, four hundred nine thousand, five hundred seventy-seven".