90412659769 has 2 divisors, whose sum is σ = 90412659770. Its totient is φ = 90412659768.

The previous prime is 90412659721. The next prime is 90412659823. The reversal of 90412659769 is 96795621409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87873709225 + 2538950544 = 296435^2 + 50388^2 .

It is a cyclic number.

It is not a de Polignac number, because 90412659769 - 2¹⁹ = 90412135481 is a prime.

It is a super-2 number, since 2×90412659769² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90412659719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45206329884 + 45206329885.

It is an arithmetic number, because the mean of its divisors is an integer number (45206329885).

Almost surely, 2^90412659769 is an apocalyptic number.

It is an amenable number.

90412659769 is a deficient number, since it is larger than the sum of its proper divisors (1).

90412659769 is an equidigital number, since it uses as much as digits as its factorization.

90412659769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7348320, while the sum is 58.

The spelling of 90412659769 in words is "ninety billion, four hundred twelve million, six hundred fifty-nine thousand, seven hundred sixty-nine".