2856438699 has 4 divisors (see below), whose sum is σ = 3808584936. Its totient is φ = 1904292464.

The previous prime is 2856438691. The next prime is 2856438703. The reversal of 2856438699 is 9968346582.

2856438699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2856438699 - 2³ = 2856438691 is a prime.

It is a super-2 number, since 2×2856438699² = 16318484082289625202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2856438691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476073114 + ... + 476073119.

It is an arithmetic number, because the mean of its divisors is an integer number (952146234).

Almost surely, 2^2856438699 is an apocalyptic number.

2856438699 is a deficient number, since it is larger than the sum of its proper divisors (952146237).

2856438699 is an equidigital number, since it uses as much as digits as its factorization.

2856438699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952146236.

The product of its digits is 22394880, while the sum is 60.

The square root of 2856438699 is about 53445.6611803054. The cubic root of 2856438699 is about 1418.8668303747.

The spelling of 2856438699 in words is "two billion, eight hundred fifty-six million, four hundred thirty-eight thousand, six hundred ninety-nine".