13394445 has 16 divisors (see below), whose sum is σ = 21479040. Its totient is φ = 7127744.

The previous prime is 13394443. The next prime is 13394461. The reversal of 13394445 is 54449331.

Added to its reverse (54449331) it gives a triangular number (67843776 = T₁₁₆₄₈).

It is a cyclic number.

It is not a de Polignac number, because 13394445 - 2¹ = 13394443 is a prime.

It is a super-2 number, since 2×13394445² = 358822313716050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13394443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9496 + ... + 10814.

It is an arithmetic number, because the mean of its divisors is an integer number (1342440).

Almost surely, 2^13394445 is an apocalyptic number.

13394445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13394445 is a deficient number, since it is larger than the sum of its proper divisors (8084595).

13394445 is a wasteful number, since it uses less digits than its factorization.

13394445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004.

The product of its digits is 25920, while the sum is 33.

The square root of 13394445 is about 3659.8422097134. The cubic root of 13394445 is about 237.4879476802.

Adding to 13394445 its reverse (54449331), we get a triangular number (67843776 = T₁₁₆₄₈).

The spelling of 13394445 in words is "thirteen million, three hundred ninety-four thousand, four hundred forty-five".