390000013 has 4 divisors (see below), whose sum is σ = 420000028. Its totient is φ = 360000000.

The previous prime is 389999999. The next prime is 390000041. The reversal of 390000013 is 310000093.

It is a happy number.

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 83119689 + 306880324 = 9117^2 + 17518^2 .

It is a cyclic number.

It is not a de Polignac number, because 390000013 - 2⁹ = 389999501 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 (390000073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14999988 + ... + 15000013.

It is an arithmetic number, because the mean of its divisors is an integer number (105000007).

Almost surely, 2^390000013 is an apocalyptic number.

It is an amenable number.

390000013 is a deficient number, since it is larger than the sum of its proper divisors (30000015).

390000013 is a wasteful number, since it uses less digits than its factorization.

390000013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30000014.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 390000013 is about 19748.4179872718. The cubic root of 390000013 is about 730.6143655242.

The spelling of 390000013 in words is "three hundred ninety million, thirteen", and thus it is an aban number.