13968249 has 32 divisors (see below), whose sum is σ = 20697600. Its totient is φ = 8346240.

The previous prime is 13968239. The next prime is 13968281. The reversal of 13968249 is 94286931.

It is not a de Polignac number, because 13968249 - 2⁵ = 13968217 is a prime.

It is a super-2 number, since 2×13968249² = 390223960252002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13968249.

It is not an unprimeable number, because it can be changed into a prime (13968209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100422 + ... + 100560.

It is an arithmetic number, because the mean of its divisors is an integer number (646800).

Almost surely, 2^13968249 is an apocalyptic number.

13968249 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13968249 is a deficient number, since it is larger than the sum of its proper divisors (6729351).

13968249 is a wasteful number, since it uses less digits than its factorization.

13968249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245.

The product of its digits is 93312, while the sum is 42.

The square root of 13968249 is about 3737.4120725443. The cubic root of 13968249 is about 240.8318874873.

The spelling of 13968249 in words is "thirteen million, nine hundred sixty-eight thousand, two hundred forty-nine".