3970857 has 12 divisors (see below), whose sum is σ = 5820080. Its totient is φ = 2406360.

The previous prime is 3970849. The next prime is 3970859. The reversal of 3970857 is 7580793.

It is not a de Polignac number, because 3970857 - 2³ = 3970849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3970859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5107 + ... + 5832.

Almost surely, 2^3970857 is an apocalyptic number.

It is an amenable number.

3970857 is a deficient number, since it is larger than the sum of its proper divisors (1849223).

3970857 is a wasteful number, since it uses less digits than its factorization.

3970857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10964 (or 10953 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 3970857 is about 1992.7009308976. The cubic root of 3970857 is about 158.3536515631.

The spelling of 3970857 in words is "three million, nine hundred seventy thousand, eight hundred fifty-seven".