3949813 has 8 divisors (see below), whose sum is σ = 4710528. Its totient is φ = 3238224.

The previous prime is 3949793. The next prime is 3949819. The reversal of 3949813 is 3189493.

3949813 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

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 3949813 - 2⁹ = 3949301 is a prime.

It is a Duffinian number.

3949813 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12106 + ... + 12427.

It is an arithmetic number, because the mean of its divisors is an integer number (588816).

Almost surely, 2^3949813 is an apocalyptic number.

It is an amenable number.

3949813 is a deficient number, since it is larger than the sum of its proper divisors (760715).

3949813 is a wasteful number, since it uses less digits than its factorization.

3949813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24563.

The product of its digits is 23328, while the sum is 37.

The square root of 3949813 is about 1987.4136459228. The cubic root of 3949813 is about 158.0734183174.

The spelling of 3949813 in words is "three million, nine hundred forty-nine thousand, eight hundred thirteen".