90090990953 has 2 divisors, whose sum is σ = 90090990954. Its totient is φ = 90090990952.

The previous prime is 90090990911. The next prime is 90090990959. The reversal of 90090990953 is 35909909009.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66176533504 + 23914457449 = 257248^2 + 154643^2 .

It is a cyclic number.

It is not a de Polignac number, because 90090990953 - 2¹² = 90090986857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90090990895 and 90090990904.

It is not a weakly prime, because it can be changed into another prime (90090990959) 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, 45045495476 + 45045495477.

It is an arithmetic number, because the mean of its divisors is an integer number (45045495477).

Almost surely, 2^90090990953 is an apocalyptic number.

It is an amenable number.

90090990953 is a deficient number, since it is larger than the sum of its proper divisors (1).

90090990953 is an equidigital number, since it uses as much as digits as its factorization.

90090990953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 885735, while the sum is 53.

The spelling of 90090990953 in words is "ninety billion, ninety million, nine hundred ninety thousand, nine hundred fifty-three".