13883857 has 6 divisors (see below), whose sum is σ = 15034182. Its totient is φ = 12815712.

The previous prime is 13883839. The next prime is 13883861. The reversal of 13883857 is 75838831.

13883857 is digitally balanced in base 3, 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 3 ways, for example, as 370881 + 13512976 = 609^2 + 3676^2 .

It is not a de Polignac number, because 13883857 - 2²³ = 5495249 is a prime.

It is a super-2 number, since 2×13883857² = 385522970392898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13883867) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40908 + ... + 41245.

It is an arithmetic number, because the mean of its divisors is an integer number (2505697).

Almost surely, 2^13883857 is an apocalyptic number.

It is an amenable number.

13883857 is a deficient number, since it is larger than the sum of its proper divisors (1150325).

13883857 is an equidigital number, since it uses as much as digits as its factorization.

13883857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82179 (or 82166 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 13883857 is about 3726.1048026055. The cubic root of 13883857 is about 240.3458959198.

The spelling of 13883857 in words is "thirteen million, eight hundred eighty-three thousand, eight hundred fifty-seven".