2917989923 has 16 divisors (see below), whose sum is σ = 3088972800. Its totient is φ = 2748805920.

The previous prime is 2917989901. The next prime is 2917989931. The reversal of 2917989923 is 3299897192.

It is a cyclic number.

It is not a de Polignac number, because 2917989923 - 2⁶ = 2917989859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2917989953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4468265 + ... + 4468917.

It is an arithmetic number, because the mean of its divisors is an integer number (193060800).

Almost surely, 2^2917989923 is an apocalyptic number.

2917989923 is a deficient number, since it is larger than the sum of its proper divisors (170982877).

2917989923 is a wasteful number, since it uses less digits than its factorization.

2917989923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642.

The product of its digits is 4408992, while the sum is 59.

The square root of 2917989923 is about 54018.4220706233. The cubic root of 2917989923 is about 1428.9858529027.

The spelling of 2917989923 in words is "two billion, nine hundred seventeen million, nine hundred eighty-nine thousand, nine hundred twenty-three".