989213023 has 4 divisors (see below), whose sum is σ = 989348368. Its totient is φ = 989077680.

The previous prime is 989212993. The next prime is 989213053. The reversal of 989213023 is 320312989.

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

It is an interprime number because it is at equal distance from previous prime (989212993) and next prime (989213053).

It is a cyclic number.

It is not a de Polignac number, because 989213023 - 2²⁵ = 955658591 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 (989213053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56043 + ... + 71548.

It is an arithmetic number, because the mean of its divisors is an integer number (247337092).

Almost surely, 2^989213023 is an apocalyptic number.

989213023 is a deficient number, since it is larger than the sum of its proper divisors (135345).

989213023 is a wasteful number, since it uses less digits than its factorization.

989213023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135344.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 989213023 is about 31451.7570733338. The cubic root of 989213023 is about 996.3913341957.

The spelling of 989213023 in words is "nine hundred eighty-nine million, two hundred thirteen thousand, twenty-three".