13790309 has 8 divisors (see below), whose sum is σ = 15213912. Its totient is φ = 12418560.

The previous prime is 13790303. The next prime is 13790311. The reversal of 13790309 is 90309731.

It is a happy number.

13790309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 122500 + 13667809 = 350^2 + 3697^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13790309 - 2¹⁶ = 13724773 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 (13790303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12404 + ... + 13469.

It is an arithmetic number, because the mean of its divisors is an integer number (1901739).

Almost surely, 2^13790309 is an apocalyptic number.

It is an amenable number.

13790309 is a deficient number, since it is larger than the sum of its proper divisors (1423603).

13790309 is a wasteful number, since it uses less digits than its factorization.

13790309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25927.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 13790309 is about 3713.5305303713. The cubic root of 13790309 is about 239.8048703299.

The spelling of 13790309 in words is "thirteen million, seven hundred ninety thousand, three hundred nine".