3970865 has 4 divisors (see below), whose sum is σ = 4765044. Its totient is φ = 3176688.

The previous prime is 3970859. The next prime is 3970903. The reversal of 3970865 is 5680793.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2096704 + 1874161 = 1448^2 + 1369^2 .

It is a cyclic number.

It is not a de Polignac number, because 3970865 - 2⁴ = 3970849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397082 + ... + 397091.

It is an arithmetic number, because the mean of its divisors is an integer number (1191261).

Almost surely, 2^3970865 is an apocalyptic number.

It is an amenable number.

3970865 is a deficient number, since it is larger than the sum of its proper divisors (794179).

3970865 is an equidigital number, since it uses as much as digits as its factorization.

3970865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794178.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 3970865 is about 1992.7029382224. The cubic root of 3970865 is about 158.3537579069.

The spelling of 3970865 in words is "three million, nine hundred seventy thousand, eight hundred sixty-five".