90940584487 has 2 divisors, whose sum is σ = 90940584488. Its totient is φ = 90940584486.

The previous prime is 90940584461. The next prime is 90940584521. The reversal of 90940584487 is 78448504909.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90940584487 - 2⁷ = 90940584359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90940584407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45470292243 + 45470292244.

It is an arithmetic number, because the mean of its divisors is an integer number (45470292244).

Almost surely, 2^90940584487 is an apocalyptic number.

90940584487 is a deficient number, since it is larger than the sum of its proper divisors (1).

90940584487 is an equidigital number, since it uses as much as digits as its factorization.

90940584487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 90940584487 in words is "ninety billion, nine hundred forty million, five hundred eighty-four thousand, four hundred eighty-seven".