2389909923 has 12 divisors (see below), whose sum is σ = 3571130160. Its totient is φ = 1538332656.

The previous prime is 2389909919. The next prime is 2389909931. The reversal of 2389909923 is 3299099832.

It is not a de Polignac number, because 2389909923 - 2² = 2389909919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2389909923.

It is not an unprimeable number, because it can be changed into a prime (2389909523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4578111 + ... + 4578632.

It is an arithmetic number, because the mean of its divisors is an integer number (297594180).

Almost surely, 2^2389909923 is an apocalyptic number.

2389909923 is a deficient number, since it is larger than the sum of its proper divisors (1181220237).

2389909923 is a wasteful number, since it uses less digits than its factorization.

2389909923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9156778 (or 9156775 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The square root of 2389909923 is about 48886.7049718019. The cubic root of 2389909923 is about 1336.9869784644.

The spelling of 2389909923 in words is "two billion, three hundred eighty-nine million, nine hundred nine thousand, nine hundred twenty-three".