3966915 has 32 divisors (see below), whose sum is σ = 6912000. Its totient is φ = 1935360.

The previous prime is 3966913. The next prime is 3966923. The reversal of 3966915 is 5196693.

It is not a de Polignac number, because 3966915 - 2¹ = 3966913 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (3966913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8611 + ... + 9059.

It is an arithmetic number, because the mean of its divisors is an integer number (216000).

Almost surely, 2^3966915 is an apocalyptic number.

3966915 is a deficient number, since it is larger than the sum of its proper divisors (2945085).

3966915 is a wasteful number, since it uses less digits than its factorization.

3966915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507.

The product of its digits is 43740, while the sum is 39.

The square root of 3966915 is about 1991.7115755048. The cubic root of 3966915 is about 158.3012332586.

The spelling of 3966915 in words is "three million, nine hundred sixty-six thousand, nine hundred fifteen".