90889079 has 2 divisors, whose sum is σ = 90889080. Its totient is φ = 90889078.

The previous prime is 90889063. The next prime is 90889081. The reversal of 90889079 is 97098809.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90889079 - 2⁴ = 90889063 is a prime.

Together with 90889081, 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 (90889039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45444539 + 45444540.

It is an arithmetic number, because the mean of its divisors is an integer number (45444540).

Almost surely, 2^90889079 is an apocalyptic number.

90889079 is a deficient number, since it is larger than the sum of its proper divisors (1).

90889079 is an equidigital number, since it uses as much as digits as its factorization.

90889079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 50.

The square root of 90889079 is about 9533.5764013302. The cubic root of 90889079 is about 449.6113170506.

The spelling of 90889079 in words is "ninety million, eight hundred eighty-nine thousand, seventy-nine".