90412659889 has 2 divisors, whose sum is σ = 90412659890. Its totient is φ = 90412659888.

The previous prime is 90412659859. The next prime is 90412659913. The reversal of 90412659889 is 98895621409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75721280625 + 14691379264 = 275175^2 + 121208^2 .

It is a cyclic number.

It is not a de Polignac number, because 90412659889 - 2³³ = 81822725297 is a prime.

It is not a weakly prime, because it can be changed into another prime (90412659829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45206329944 + 45206329945.

It is an arithmetic number, because the mean of its divisors is an integer number (45206329945).

Almost surely, 2^90412659889 is an apocalyptic number.

It is an amenable number.

90412659889 is a deficient number, since it is larger than the sum of its proper divisors (1).

90412659889 is an equidigital number, since it uses as much as digits as its factorization.

90412659889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11197440, while the sum is 61.

The spelling of 90412659889 in words is "ninety billion, four hundred twelve million, six hundred fifty-nine thousand, eight hundred eighty-nine".