90023079 has 4 divisors (see below), whose sum is σ = 120030776. Its totient is φ = 60015384.

The previous prime is 90023077. The next prime is 90023099. The reversal of 90023079 is 97032009.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 90023079 - 2¹ = 90023077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90023071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15003844 + ... + 15003849.

It is an arithmetic number, because the mean of its divisors is an integer number (30007694).

Almost surely, 2^90023079 is an apocalyptic number.

90023079 is a deficient number, since it is larger than the sum of its proper divisors (30007697).

90023079 is a wasteful number, since it uses less digits than its factorization.

90023079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30007696.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 90023079 is about 9488.0492726377. The cubic root of 90023079 is about 448.1787774338.

The spelling of 90023079 in words is "ninety million, twenty-three thousand, seventy-nine".