2399396157 has 12 divisors (see below), whose sum is σ = 3466236124. Its totient is φ = 1599393600.

The previous prime is 2399396149. The next prime is 2399396189. The reversal of 2399396157 is 7516939932.

It is a happy number.

2399396157 is a `hidden beast` number, since 239 + 9 + 396 + 15 + 7 = 666.

2399396157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1802766681 + 596629476 = 42459^2 + 24426^2 .

It is not a de Polignac number, because 2399396157 - 2³ = 2399396149 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 (2399396147) 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, 99873 + ... + 121545.

Almost surely, 2^2399396157 is an apocalyptic number.

It is an amenable number.

2399396157 is a deficient number, since it is larger than the sum of its proper divisors (1066839967).

2399396157 is a wasteful number, since it uses less digits than its factorization.

2399396157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33980 (or 33977 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 54.

The square root of 2399396157 is about 48983.6315211520. The cubic root of 2399396157 is about 1338.7536039678.

The spelling of 2399396157 in words is "two billion, three hundred ninety-nine million, three hundred ninety-six thousand, one hundred fifty-seven".