3961864 has 16 divisors (see below), whose sum is σ = 7685100. Its totient is φ = 1912512.

The previous prime is 3961847. The next prime is 3961877. The reversal of 3961864 is 4681693.

It can be written as a sum of positive squares in 2 ways, for example, as 3960100 + 1764 = 1990^2 + 42^2 .

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, 8307 + ... + 8770.

Almost surely, 2^3961864 is an apocalyptic number.

It is an amenable number.

3961864 is a deficient number, since it is larger than the sum of its proper divisors (3723236).

3961864 is a wasteful number, since it uses less digits than its factorization.

3961864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17112 (or 17108 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 3961864 is about 1990.4431667345. The cubic root of 3961864 is about 158.2340173715.

The spelling of 3961864 in words is "three million, nine hundred sixty-one thousand, eight hundred sixty-four".