90804359 has 2 divisors, whose sum is σ = 90804360. Its totient is φ = 90804358.

The previous prime is 90804349. The next prime is 90804367. The reversal of 90804359 is 95340809.

It is a strong prime.

It is an emirp because it is prime and its reverse (95340809) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90804359 is a prime.

It is a super-2 number, since 2×90804359² = 16490863226801762, which contains 22 as substring.

It is a Sophie Germain 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 (90804349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45402179 + 45402180.

It is an arithmetic number, because the mean of its divisors is an integer number (45402180).

Almost surely, 2^90804359 is an apocalyptic number.

90804359 is a deficient number, since it is larger than the sum of its proper divisors (1).

90804359 is an equidigital number, since it uses as much as digits as its factorization.

90804359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 90804359 is about 9529.1321220770. The cubic root of 90804359 is about 449.4715756114.

The spelling of 90804359 in words is "ninety million, eight hundred four thousand, three hundred fifty-nine".