90940357 has 2 divisors, whose sum is σ = 90940358. Its totient is φ = 90940356.

The previous prime is 90940307. The next prime is 90940363. The reversal of 90940357 is 75304909.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74545956 + 16394401 = 8634^2 + 4049^2 .

It is a cyclic number.

It is not a de Polignac number, because 90940357 - 2¹⁵ = 90907589 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 (90940307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45470178 + 45470179.

It is an arithmetic number, because the mean of its divisors is an integer number (45470179).

Almost surely, 2^90940357 is an apocalyptic number.

It is an amenable number.

90940357 is a deficient number, since it is larger than the sum of its proper divisors (1).

90940357 is an equidigital number, since it uses as much as digits as its factorization.

90940357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 90940357 is about 9536.2653591435. The cubic root of 90940357 is about 449.6958553873.

The spelling of 90940357 in words is "ninety million, nine hundred forty thousand, three hundred fifty-seven".