90393269 has 2 divisors, whose sum is σ = 90393270. Its totient is φ = 90393268.

The previous prime is 90393239. The next prime is 90393271. The reversal of 90393269 is 96239309.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51480625 + 38912644 = 7175^2 + 6238^2 .

It is a cyclic number.

It is not a de Polignac number, because 90393269 - 2¹⁶ = 90327733 is a prime.

It is a super-2 number, since 2×90393269² = 16341886161012722, which contains 22 as substring.

Together with 90393271, 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 (90393239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45196634 + 45196635.

It is an arithmetic number, because the mean of its divisors is an integer number (45196635).

Almost surely, 2^90393269 is an apocalyptic number.

It is an amenable number.

90393269 is a deficient number, since it is larger than the sum of its proper divisors (1).

90393269 is an equidigital number, since it uses as much as digits as its factorization.

90393269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 41.

The square root of 90393269 is about 9507.5374834917. The cubic root of 90393269 is about 448.7922660459.

The spelling of 90393269 in words is "ninety million, three hundred ninety-three thousand, two hundred sixty-nine".