3961917 has 12 divisors (see below), whose sum is σ = 5765760. Its totient is φ = 2621448.

The previous prime is 3961907. The next prime is 3961933. The reversal of 3961917 is 7191693.

3961917 is a `hidden beast` number, since 39 + 619 + 1 + 7 = 666.

It is not a de Polignac number, because 3961917 - 2¹⁰ = 3960893 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

3961917 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3961907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 333 + ... + 2834.

It is an arithmetic number, because the mean of its divisors is an integer number (480480).

Almost surely, 2^3961917 is an apocalyptic number.

It is an amenable number.

3961917 is a deficient number, since it is larger than the sum of its proper divisors (1803843).

3961917 is a wasteful number, since it uses less digits than its factorization.

3961917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312 (or 3309 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 3961917 is about 1990.4564803080. The cubic root of 3961917 is about 158.2347229624.

The spelling of 3961917 in words is "three million, nine hundred sixty-one thousand, nine hundred seventeen".