86311579 has 2 divisors, whose sum is σ = 86311580. Its totient is φ = 86311578.

The previous prime is 86311543. The next prime is 86311583. The reversal of 86311579 is 97511368.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86311579 - 2¹³ = 86303387 is a prime.

It is not a weakly prime, because it can be changed into another prime (86312579) 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, 43155789 + 43155790.

It is an arithmetic number, because the mean of its divisors is an integer number (43155790).

Almost surely, 2^86311579 is an apocalyptic number.

86311579 is a deficient number, since it is larger than the sum of its proper divisors (1).

86311579 is an equidigital number, since it uses as much as digits as its factorization.

86311579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 40.

The square root of 86311579 is about 9290.4025208814. The cubic root of 86311579 is about 441.9329201451.

The spelling of 86311579 in words is "eighty-six million, three hundred eleven thousand, five hundred seventy-nine".