90939269 has 2 divisors, whose sum is σ = 90939270. Its totient is φ = 90939268.

The previous prime is 90939259. The next prime is 90939293. The reversal of 90939269 is 96293909.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77704225 + 13235044 = 8815^2 + 3638^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90939269 is a prime.

It is a super-2 number, since 2×90939269² = 16539901292508722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90939259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45469634 + 45469635.

It is an arithmetic number, because the mean of its divisors is an integer number (45469635).

Almost surely, 2^90939269 is an apocalyptic number.

It is an amenable number.

90939269 is a deficient number, since it is larger than the sum of its proper divisors (1).

90939269 is an equidigital number, since it uses as much as digits as its factorization.

90939269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 236196, while the sum is 47.

The square root of 90939269 is about 9536.2083135804. The cubic root of 90939269 is about 449.6940620103.

The spelling of 90939269 in words is "ninety million, nine hundred thirty-nine thousand, two hundred sixty-nine".