13393444 has 6 divisors (see below), whose sum is σ = 23438534. Its totient is φ = 6696720.

The previous prime is 13393441. The next prime is 13393453. The reversal of 13393444 is 44439331.

It can be written as a sum of positive squares in only one way, i.e., 12687844 + 705600 = 3562^2 + 840^2 .

It is a super-2 number, since 2×13393444² = 358768684362272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13393441) 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 as a sum of consecutive naturals, namely, 1674177 + ... + 1674184.

Almost surely, 2^13393444 is an apocalyptic number.

It is an amenable number.

13393444 is a deficient number, since it is larger than the sum of its proper divisors (10045090).

13393444 is a wasteful number, since it uses less digits than its factorization.

13393444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348365 (or 3348363 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 13393444 is about 3659.7054526287. The cubic root of 13393444 is about 237.4820315122.

The spelling of 13393444 in words is "thirteen million, three hundred ninety-three thousand, four hundred forty-four".