89090279 has 2 divisors, whose sum is σ = 89090280. Its totient is φ = 89090278.

The previous prime is 89090263. The next prime is 89090299. The reversal of 89090279 is 97209098.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89090279 - 2⁴ = 89090263 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89090219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44545139 + 44545140.

It is an arithmetic number, because the mean of its divisors is an integer number (44545140).

Almost surely, 2^89090279 is an apocalyptic number.

89090279 is a deficient number, since it is larger than the sum of its proper divisors (1).

89090279 is an equidigital number, since it uses as much as digits as its factorization.

89090279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 89090279 is about 9438.7646967175. The cubic root of 89090279 is about 446.6254221093.

The spelling of 89090279 in words is "eighty-nine million, ninety thousand, two hundred seventy-nine".