90113279 has 2 divisors, whose sum is σ = 90113280. Its totient is φ = 90113278.

The previous prime is 90113239. The next prime is 90113293. The reversal of 90113279 is 97231109.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90113279 - 2¹² = 90109183 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 (90113239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45056639 + 45056640.

It is an arithmetic number, because the mean of its divisors is an integer number (45056640).

Almost surely, 2^90113279 is an apocalyptic number.

90113279 is a deficient number, since it is larger than the sum of its proper divisors (1).

90113279 is an equidigital number, since it uses as much as digits as its factorization.

90113279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 90113279 is about 9492.8014305578. The cubic root of 90113279 is about 448.3284139935.

The spelling of 90113279 in words is "ninety million, one hundred thirteen thousand, two hundred seventy-nine".