3931949 has 8 divisors (see below), whose sum is σ = 4509888. Its totient is φ = 3358080.

The previous prime is 3931943. The next prime is 3931969. The reversal of 3931949 is 9491393.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3931949 - 2⁴ = 3931933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3931943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1469 + ... + 3165.

It is an arithmetic number, because the mean of its divisors is an integer number (563736).

Almost surely, 2^3931949 is an apocalyptic number.

It is an amenable number.

3931949 is a deficient number, since it is larger than the sum of its proper divisors (577939).

3931949 is a wasteful number, since it uses less digits than its factorization.

3931949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035.

The product of its digits is 26244, while the sum is 38.

The square root of 3931949 is about 1982.9142694529. The cubic root of 3931949 is about 157.8347495147.

The spelling of 3931949 in words is "three million, nine hundred thirty-one thousand, nine hundred forty-nine".