3949191 has 12 divisors (see below), whose sum is σ = 5901480. Its totient is φ = 2541840.

The previous prime is 3949177. The next prime is 3949193. The reversal of 3949191 is 1919493.

It is not a de Polignac number, because 3949191 - 2⁷ = 3949063 is a prime.

It is a super-2 number, since 2×3949191² = 31192219108962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949193) 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, 7305 + ... + 7826.

It is an arithmetic number, because the mean of its divisors is an integer number (491790).

Almost surely, 2^3949191 is an apocalyptic number.

3949191 is a deficient number, since it is larger than the sum of its proper divisors (1952289).

3949191 is a wasteful number, since it uses less digits than its factorization.

3949191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15166 (or 15163 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 3949191 is about 1987.2571549752. The cubic root of 3949191 is about 158.0651203020.

The spelling of 3949191 in words is "three million, nine hundred forty-nine thousand, one hundred ninety-one".