2439295921 has 2 divisors, whose sum is σ = 2439295922. Its totient is φ = 2439295920.

The previous prime is 2439295907. The next prime is 2439295933. The reversal of 2439295921 is 1295929342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1529670321 + 909625600 = 39111^2 + 30160^2 .

It is a cyclic number.

It is not a de Polignac number, because 2439295921 - 2²⁵ = 2405741489 is a prime.

It is not a weakly prime, because it can be changed into another prime (2439293921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1219647960 + 1219647961.

It is an arithmetic number, because the mean of its divisors is an integer number (1219647961).

Almost surely, 2^2439295921 is an apocalyptic number.

It is an amenable number.

2439295921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2439295921 is an equidigital number, since it uses as much as digits as its factorization.

2439295921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The square root of 2439295921 is about 49389.2287953558. The cubic root of 2439295921 is about 1346.1335957968.

The spelling of 2439295921 in words is "two billion, four hundred thirty-nine million, two hundred ninety-five thousand, nine hundred twenty-one".