3903813 has 12 divisors (see below), whose sum is σ = 5884320. Its totient is φ = 2489256.

The previous prime is 3903787. The next prime is 3903839. The reversal of 3903813 is 3183093.

3903813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3903787) and next prime (3903839).

It is not a de Polignac number, because 3903813 - 2⁶ = 3903749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3903883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9223 + ... + 9636.

It is an arithmetic number, because the mean of its divisors is an integer number (490360).

Almost surely, 2^3903813 is an apocalyptic number.

It is an amenable number.

3903813 is a deficient number, since it is larger than the sum of its proper divisors (1980507).

3903813 is a wasteful number, since it uses less digits than its factorization.

3903813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18888 (or 18885 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 3903813 is about 1975.8069237656. The cubic root of 3903813 is about 157.4573731959.

The spelling of 3903813 in words is "three million, nine hundred three thousand, eight hundred thirteen".