86724538469 has 2 divisors, whose sum is σ = 86724538470. Its totient is φ = 86724538468.

The previous prime is 86724538457. The next prime is 86724538487. The reversal of 86724538469 is 96483542768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86708458369 + 16080100 = 294463^2 + 4010^2 .

It is a cyclic number.

It is not a de Polignac number, because 86724538469 - 2⁸ = 86724538213 is a prime.

It is a super-2 number, since 2×86724538469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86724558469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43362269234 + 43362269235.

It is an arithmetic number, because the mean of its divisors is an integer number (43362269235).

Almost surely, 2^86724538469 is an apocalyptic number.

It is an amenable number.

86724538469 is a deficient number, since it is larger than the sum of its proper divisors (1).

86724538469 is an equidigital number, since it uses as much as digits as its factorization.

86724538469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69672960, while the sum is 62.

The spelling of 86724538469 in words is "eighty-six billion, seven hundred twenty-four million, five hundred thirty-eight thousand, four hundred sixty-nine".