3937013 has 4 divisors (see below), whose sum is σ = 4168620. Its totient is φ = 3705408.

The previous prime is 3936997. The next prime is 3937019. The reversal of 3937013 is 3107393.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2316484 + 1620529 = 1522^2 + 1273^2 .

It is a cyclic number.

It is not a de Polignac number, because 3937013 - 2⁴ = 3936997 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3937019) 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, 115778 + ... + 115811.

It is an arithmetic number, because the mean of its divisors is an integer number (1042155).

Almost surely, 2^3937013 is an apocalyptic number.

It is an amenable number.

3937013 is a deficient number, since it is larger than the sum of its proper divisors (231607).

3937013 is a wasteful number, since it uses less digits than its factorization.

3937013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231606.

The product of its (nonzero) digits is 1701, while the sum is 26.

The square root of 3937013 is about 1984.1907670383. The cubic root of 3937013 is about 157.9024794780.

The spelling of 3937013 in words is "three million, nine hundred thirty-seven thousand, thirteen".