90842657929 has 2 divisors, whose sum is σ = 90842657930. Its totient is φ = 90842657928.

The previous prime is 90842657887. The next prime is 90842657947. The reversal of 90842657929 is 92975624809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50663257225 + 40179400704 = 225085^2 + 200448^2 .

It is a cyclic number.

It is not a de Polignac number, because 90842657929 - 2⁹ = 90842657417 is a prime.

It is not a weakly prime, because it can be changed into another prime (90842657999) 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, 45421328964 + 45421328965.

It is an arithmetic number, because the mean of its divisors is an integer number (45421328965).

Almost surely, 2^90842657929 is an apocalyptic number.

It is an amenable number.

90842657929 is a deficient number, since it is larger than the sum of its proper divisors (1).

90842657929 is an equidigital number, since it uses as much as digits as its factorization.

90842657929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 90842657929 in words is "ninety billion, eight hundred forty-two million, six hundred fifty-seven thousand, nine hundred twenty-nine".