13200401449 has 9 divisors (see below), whose sum is σ = 13934029917. Its totient is φ = 12503575404.

The previous prime is 13200401443. The next prime is 13200401479. The reversal of 13200401449 is 94410400231.

The square root of 13200401449 is 114893.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 13200401449 - 2²⁷ = 13066183721 is a prime.

It is a super-2 number, since 2×13200401449² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13200401443) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2179944 + ... + 2185990.

Almost surely, 2^13200401449 is an apocalyptic number.

13200401449 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13200401449 is the 114893-rd square number.

13200401449 is the 57447-th centered octagonal number.

It is an amenable number.

13200401449 is a deficient number, since it is larger than the sum of its proper divisors (733628468).

13200401449 is an frugal number, since it uses more digits than its factorization.

13200401449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12132 (or 6066 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 13200401449 in words is "thirteen billion, two hundred million, four hundred one thousand, four hundred forty-nine".