90403799 has 2 divisors, whose sum is σ = 90403800. Its totient is φ = 90403798.

The previous prime is 90403763. The next prime is 90403829. The reversal of 90403799 is 99730409.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90403799 - 2²⁰ = 89355223 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90403199) 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, 45201899 + 45201900.

It is an arithmetic number, because the mean of its divisors is an integer number (45201900).

Almost surely, 2^90403799 is an apocalyptic number.

90403799 is a deficient number, since it is larger than the sum of its proper divisors (1).

90403799 is an equidigital number, since it uses as much as digits as its factorization.

90403799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 90403799 is about 9508.0912385189. The cubic root of 90403799 is about 448.8096921187.

The spelling of 90403799 in words is "ninety million, four hundred three thousand, seven hundred ninety-nine".