4138857 has 20 divisors (see below), whose sum is σ = 6354436. Its totient is φ = 2682720.

The previous prime is 4138853. The next prime is 4138861. The reversal of 4138857 is 7588314.

It is an interprime number because it is at equal distance from previous prime (4138853) and next prime (4138861).

It can be written as a sum of positive squares in 2 ways, for example, as 2893401 + 1245456 = 1701^2 + 1116^2 .

It is not a de Polignac number, because 4138857 - 2² = 4138853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4138853) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2307 + ... + 3687.

Almost surely, 2^4138857 is an apocalyptic number.

It is an amenable number.

4138857 is a deficient number, since it is larger than the sum of its proper divisors (2215579).

4138857 is a wasteful number, since it uses less digits than its factorization.

4138857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430 (or 1421 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 4138857 is about 2034.4180986218. The cubic root of 4138857 is about 160.5560988280.

The spelling of 4138857 in words is "four million, one hundred thirty-eight thousand, eight hundred fifty-seven".