3889857 has 8 divisors (see below), whose sum is σ = 5365440. Its totient is φ = 2503760.

The previous prime is 3889843. The next prime is 3889859. The reversal of 3889857 is 7589883.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3889857 - 2⁷ = 3889729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3889859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22269 + ... + 22442.

It is an arithmetic number, because the mean of its divisors is an integer number (670680).

Almost surely, 2^3889857 is an apocalyptic number.

It is an amenable number.

3889857 is a deficient number, since it is larger than the sum of its proper divisors (1475583).

3889857 is a wasteful number, since it uses less digits than its factorization.

3889857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44743.

The product of its digits is 483840, while the sum is 48.

The square root of 3889857 is about 1972.2720400594. The cubic root of 3889857 is about 157.2695142192.

The spelling of 3889857 in words is "three million, eight hundred eighty-nine thousand, eight hundred fifty-seven".