3905013 has 16 divisors (see below), whose sum is σ = 6264320. Its totient is φ = 2113776.

The previous prime is 3905003. The next prime is 3905023. The reversal of 3905013 is 3105093.

It is an interprime number because it is at equal distance from previous prime (3905003) and next prime (3905023).

It is not a de Polignac number, because 3905013 - 2⁴ = 3904997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3905003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4495 + ... + 5292.

It is an arithmetic number, because the mean of its divisors is an integer number (391520).

Almost surely, 2^3905013 is an apocalyptic number.

It is an amenable number.

3905013 is a deficient number, since it is larger than the sum of its proper divisors (2359307).

3905013 is a wasteful number, since it uses less digits than its factorization.

3905013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9816.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 3905013 is about 1976.1105738293. The cubic root of 3905013 is about 157.4735052435.

The spelling of 3905013 in words is "three million, nine hundred five thousand, thirteen".