2857197939 has 8 divisors (see below), whose sum is σ = 4033691280. Its totient is φ = 1792751616.

The previous prime is 2857197923. The next prime is 2857197947. The reversal of 2857197939 is 9397917582.

2857197939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2857197939 - 2⁴ = 2857197923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2857197919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28011694 + ... + 28011795.

It is an arithmetic number, because the mean of its divisors is an integer number (504211410).

Almost surely, 2^2857197939 is an apocalyptic number.

2857197939 is a deficient number, since it is larger than the sum of its proper divisors (1176493341).

2857197939 is a wasteful number, since it uses less digits than its factorization.

2857197939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56023509.

The product of its digits is 8573040, while the sum is 60.

The square root of 2857197939 is about 53452.7636235957. The cubic root of 2857197939 is about 1418.9925306066.

The spelling of 2857197939 in words is "two billion, eight hundred fifty-seven million, one hundred ninety-seven thousand, nine hundred thirty-nine".