3949799 has 4 divisors (see below), whose sum is σ = 4514064. Its totient is φ = 3385536.

The previous prime is 3949793. The next prime is 3949819. The reversal of 3949799 is 9979493.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3949799 - 2¹² = 3945703 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 (3949793) 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, 282122 + ... + 282135.

It is an arithmetic number, because the mean of its divisors is an integer number (1128516).

Almost surely, 2^3949799 is an apocalyptic number.

3949799 is a deficient number, since it is larger than the sum of its proper divisors (564265).

3949799 is an equidigital number, since it uses as much as digits as its factorization.

3949799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564264.

The product of its digits is 551124, while the sum is 50.

The square root of 3949799 is about 1987.4101237540. The cubic root of 3949799 is about 158.0732315549.

The spelling of 3949799 in words is "three million, nine hundred forty-nine thousand, seven hundred ninety-nine".