13888449 has 16 divisors (see below), whose sum is σ = 21659200. Its totient is φ = 8771328.

The previous prime is 13888447. The next prime is 13888471. The reversal of 13888449 is 94488831.

It is not a de Polignac number, because 13888449 - 2¹ = 13888447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13888447) 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, 13024 + ... + 14049.

It is an arithmetic number, because the mean of its divisors is an integer number (1353700).

Almost surely, 2^13888449 is an apocalyptic number.

13888449 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13888449 is a deficient number, since it is larger than the sum of its proper divisors (7770751).

13888449 is a wasteful number, since it uses less digits than its factorization.

13888449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27101 (or 27095 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 13888449 is about 3726.7209447449. The cubic root of 13888449 is about 240.3723906395.

The spelling of 13888449 in words is "thirteen million, eight hundred eighty-eight thousand, four hundred forty-nine".