3949791 has 8 divisors (see below), whose sum is σ = 5276544. Its totient is φ = 2628120.

The previous prime is 3949733. The next prime is 3949793. The reversal of 3949791 is 1979493.

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

It is not a de Polignac number, because 3949791 - 2¹⁷ = 3818719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949793) 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 7 ways as a sum of consecutive naturals, for example, 1276 + ... + 3086.

It is an arithmetic number, because the mean of its divisors is an integer number (659568).

Almost surely, 2^3949791 is an apocalyptic number.

3949791 is a deficient number, since it is larger than the sum of its proper divisors (1326753).

3949791 is a wasteful number, since it uses less digits than its factorization.

3949791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541.

The product of its digits is 61236, while the sum is 42.

The square root of 3949791 is about 1987.4081110834. The cubic root of 3949791 is about 158.0731248333.

The spelling of 3949791 in words is "three million, nine hundred forty-nine thousand, seven hundred ninety-one".