13321739 has 8 divisors (see below), whose sum is σ = 13743840. Its totient is φ = 12912408.

The previous prime is 13321699. The next prime is 13321741. The reversal of 13321739 is 93712331.

It is a de Polignac number, because none of the positive numbers 2^k-13321739 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 (13321339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50522 + ... + 50784.

It is an arithmetic number, because the mean of its divisors is an integer number (1717980).

Almost surely, 2^13321739 is an apocalyptic number.

13321739 is a deficient number, since it is larger than the sum of its proper divisors (422101).

13321739 is an frugal number, since it uses more digits than its factorization.

13321739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 300 counting only the distinct ones).

The product of its digits is 3402, while the sum is 29.

The square root of 13321739 is about 3649.8957519359. The cubic root of 13321739 is about 237.0574673559.

The spelling of 13321739 in words is "thirteen million, three hundred twenty-one thousand, seven hundred thirty-nine".