90693129469 has 2 divisors, whose sum is σ = 90693129470. Its totient is φ = 90693129468.

The previous prime is 90693129361. The next prime is 90693129511. The reversal of 90693129469 is 96492139609.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79973012025 + 10720117444 = 282795^2 + 103538^2 .

It is a cyclic number.

It is not a de Polignac number, because 90693129469 - 2⁷ = 90693129341 is a prime.

It is a super-2 number, since 2×90693129469² (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 (90693121469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45346564734 + 45346564735.

It is an arithmetic number, because the mean of its divisors is an integer number (45346564735).

Almost surely, 2^90693129469 is an apocalyptic number.

It is an amenable number.

90693129469 is a deficient number, since it is larger than the sum of its proper divisors (1).

90693129469 is an equidigital number, since it uses as much as digits as its factorization.

90693129469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5668704, while the sum is 58.

The spelling of 90693129469 in words is "ninety billion, six hundred ninety-three million, one hundred twenty-nine thousand, four hundred sixty-nine".