3921417 has 12 divisors (see below), whose sum is σ = 5771844. Its totient is φ = 2564640.

The previous prime is 3921413. The next prime is 3921451. The reversal of 3921417 is 7141293.

It can be written as a sum of positive squares in 2 ways, for example, as 3326976 + 594441 = 1824^2 + 771^2 .

It is not a de Polignac number, because 3921417 - 2² = 3921413 is a prime.

It is a super-2 number, since 2×3921417² = 30755022575778, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3921413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3634 + ... + 4587.

It is an arithmetic number, because the mean of its divisors is an integer number (480987).

Almost surely, 2^3921417 is an apocalyptic number.

It is an amenable number.

3921417 is a deficient number, since it is larger than the sum of its proper divisors (1850427).

3921417 is a wasteful number, since it uses less digits than its factorization.

3921417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8280 (or 8277 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 3921417 is about 1980.2568015285. The cubic root of 3921417 is about 157.6936997025.

The spelling of 3921417 in words is "three million, nine hundred twenty-one thousand, four hundred seventeen".