90090990959 has 2 divisors, whose sum is σ = 90090990960. Its totient is φ = 90090990958.

The previous prime is 90090990953. The next prime is 90090991009. The reversal of 90090990959 is 95909909009.

It is a weak prime.

It is an emirp because it is prime and its reverse (95909909009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90090990959 - 2²⁸ = 89822555503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90090990898 and 90090990907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90090990953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45045495479 + 45045495480.

It is an arithmetic number, because the mean of its divisors is an integer number (45045495480).

Almost surely, 2^90090990959 is an apocalyptic number.

90090990959 is a deficient number, since it is larger than the sum of its proper divisors (1).

90090990959 is an equidigital number, since it uses as much as digits as its factorization.

90090990959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2657205, while the sum is 59.

The spelling of 90090990959 in words is "ninety billion, ninety million, nine hundred ninety thousand, nine hundred fifty-nine".