90089357 has 2 divisors, whose sum is σ = 90089358. Its totient is φ = 90089356.

The previous prime is 90089353. The next prime is 90089359. The reversal of 90089357 is 75398009.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79370281 + 10719076 = 8909^2 + 3274^2 .

It is a cyclic number.

It is not a de Polignac number, because 90089357 - 2² = 90089353 is a prime.

Together with 90089359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90089353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45044678 + 45044679.

It is an arithmetic number, because the mean of its divisors is an integer number (45044679).

Almost surely, 2^90089357 is an apocalyptic number.

It is an amenable number.

90089357 is a deficient number, since it is larger than the sum of its proper divisors (1).

90089357 is an equidigital number, since it uses as much as digits as its factorization.

90089357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 90089357 is about 9491.5413395296. The cubic root of 90089357 is about 448.2887385183.

The spelling of 90089357 in words is "ninety million, eighty-nine thousand, three hundred fifty-seven".