90996404791 has 2 divisors, whose sum is σ = 90996404792. Its totient is φ = 90996404790.

The previous prime is 90996404771. The next prime is 90996404809. The reversal of 90996404791 is 19740469909.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90996404791 - 2⁷ = 90996404663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90996404731) 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, 45498202395 + 45498202396.

It is an arithmetic number, because the mean of its divisors is an integer number (45498202396).

Almost surely, 2^90996404791 is an apocalyptic number.

90996404791 is a deficient number, since it is larger than the sum of its proper divisors (1).

90996404791 is an equidigital number, since it uses as much as digits as its factorization.

90996404791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4408992, while the sum is 58.

The spelling of 90996404791 in words is "ninety billion, nine hundred ninety-six million, four hundred four thousand, seven hundred ninety-one".