838857 has 4 divisors (see below), whose sum is σ = 1118480. Its totient is φ = 559236.

The previous prime is 838853. The next prime is 838889. The reversal of 838857 is 758838.

838857 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 838857 - 2² = 838853 is a prime.

It is a D-number.

It is a Duffinian number.

838857 is a lucky number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (838853) 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, 139807 + ... + 139812.

It is an arithmetic number, because the mean of its divisors is an integer number (279620).

2⁸³⁸⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

838857 is a deficient number, since it is larger than the sum of its proper divisors (279623).

838857 is a wasteful number, since it uses less digits than its factorization.

838857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279622.

The product of its digits is 53760, while the sum is 39.

The square root of 838857 is about 915.8913691044. The cubic root of 838857 is about 94.3110639565.

The spelling of 838857 in words is "eight hundred thirty-eight thousand, eight hundred fifty-seven".