3990941 has 4 divisors (see below), whose sum is σ = 4029792. Its totient is φ = 3952092.

The previous prime is 3990929. The next prime is 3990967. The reversal of 3990941 is 1490993.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1490993 = 7 ⋅212999.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3990941 is a prime.

It is a super-2 number, since 2×3990941² = 31855220130962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19271 + ... + 19476.

It is an arithmetic number, because the mean of its divisors is an integer number (1007448).

Almost surely, 2^3990941 is an apocalyptic number.

It is an amenable number.

3990941 is a deficient number, since it is larger than the sum of its proper divisors (38851).

3990941 is a wasteful number, since it uses less digits than its factorization.

3990941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38850.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 3990941 is about 1997.7339662728. The cubic root of 3990941 is about 158.6201790659.

The spelling of 3990941 in words is "three million, nine hundred ninety thousand, nine hundred forty-one".