2399424961 has 2 divisors, whose sum is σ = 2399424962. Its totient is φ = 2399424960.

The previous prime is 2399424953. The next prime is 2399424977. The reversal of 2399424961 is 1694249932.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1741810225 + 657614736 = 41735^2 + 25644^2 .

It is a cyclic number.

It is not a de Polignac number, because 2399424961 - 2³ = 2399424953 is a prime.

It is not a weakly prime, because it can be changed into another prime (2399424061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1199712480 + 1199712481.

It is an arithmetic number, because the mean of its divisors is an integer number (1199712481).

Almost surely, 2^2399424961 is an apocalyptic number.

It is an amenable number.

2399424961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2399424961 is an equidigital number, since it uses as much as digits as its factorization.

2399424961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 49.

The square root of 2399424961 is about 48983.9255368534. The cubic root of 2399424961 is about 1338.7589610524.

The spelling of 2399424961 in words is "two billion, three hundred ninety-nine million, four hundred twenty-four thousand, nine hundred sixty-one".