39009013 has 4 divisors (see below), whose sum is σ = 39839040. Its totient is φ = 38178988.

The previous prime is 39009011. The next prime is 39009017. The reversal of 39009013 is 31090093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31090093 = 17 ⋅1828829.

It is a cyclic number.

It is not a de Polignac number, because 39009013 - 2¹ = 39009011 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 (39009011) 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, 414943 + ... + 415036.

It is an arithmetic number, because the mean of its divisors is an integer number (9959760).

Almost surely, 2^39009013 is an apocalyptic number.

It is an amenable number.

39009013 is a deficient number, since it is larger than the sum of its proper divisors (830027).

39009013 is an equidigital number, since it uses as much as digits as its factorization.

39009013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830026.

The product of its (nonzero) digits is 729, while the sum is 25.

The square root of 39009013 is about 6245.7195742364. The cubic root of 39009013 is about 339.1472662112.

The spelling of 39009013 in words is "thirty-nine million, nine thousand, thirteen".