8939857 has 4 divisors (see below), whose sum is σ = 9091440. Its totient is φ = 8788276.

The previous prime is 8939849. The next prime is 8939863. The reversal of 8939857 is 7589398.

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 a cyclic number.

It is not a de Polignac number, because 8939857 - 2³ = 8939849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8939857.

It is not an unprimeable number, because it can be changed into a prime (8939057) 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, 75703 + ... + 75820.

It is an arithmetic number, because the mean of its divisors is an integer number (2272860).

Almost surely, 2^8939857 is an apocalyptic number.

It is an amenable number.

8939857 is a deficient number, since it is larger than the sum of its proper divisors (151583).

8939857 is a wasteful number, since it uses less digits than its factorization.

8939857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151582.

The product of its digits is 544320, while the sum is 49.

The square root of 8939857 is about 2989.9593642724. The cubic root of 8939857 is about 207.5440038287.

The spelling of 8939857 in words is "eight million, nine hundred thirty-nine thousand, eight hundred fifty-seven".