13357639 has 4 divisors (see below), whose sum is σ = 13379440. Its totient is φ = 13335840.

The previous prime is 13357633. The next prime is 13357667. The reversal of 13357639 is 93675331.

It is a happy number.

13357639 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93675331 = 701 ⋅133631.

It is a cyclic number.

It is not a de Polignac number, because 13357639 - 2⁵ = 13357607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13357598 and 13357607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13357633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9954 + ... + 11215.

It is an arithmetic number, because the mean of its divisors is an integer number (3344860).

Almost surely, 2^13357639 is an apocalyptic number.

13357639 is a deficient number, since it is larger than the sum of its proper divisors (21801).

13357639 is an equidigital number, since it uses as much as digits as its factorization.

13357639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21800.

The product of its digits is 51030, while the sum is 37.

The square root of 13357639 is about 3654.8103917987. The cubic root of 13357639 is about 237.2702206059.

The spelling of 13357639 in words is "thirteen million, three hundred fifty-seven thousand, six hundred thirty-nine".