3943970 has 16 divisors (see below), whose sum is σ = 7122168. Its totient is φ = 1572480.

The previous prime is 3943967. The next prime is 3943993. The reversal of 3943970 is 793493.

It can be written as a sum of positive squares in 4 ways, for example, as 2989441 + 954529 = 1729^2 + 977^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3943970.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4832 + ... + 5588.

Almost surely, 2^3943970 is an apocalyptic number.

3943970 is a deficient number, since it is larger than the sum of its proper divisors (3178198).

3943970 is a wasteful number, since it uses less digits than its factorization.

3943970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 3943970 is about 1985.9431008969. The cubic root of 3943970 is about 157.9954332921.

It can be divided in two parts, 3943 and 970, that added together give a cube (4913 = 17³).

The spelling of 3943970 in words is "three million, nine hundred forty-three thousand, nine hundred seventy".