13972249 has 4 divisors (see below), whose sum is σ = 14794164. Its totient is φ = 13150336.

The previous prime is 13972243. The next prime is 13972253. The reversal of 13972249 is 94227931.

13972249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9272025 + 4700224 = 3045^2 + 2168^2 .

It is a cyclic number.

It is not a de Polignac number, because 13972249 - 2¹³ = 13964057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13972243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410932 + ... + 410965.

It is an arithmetic number, because the mean of its divisors is an integer number (3698541).

Almost surely, 2^13972249 is an apocalyptic number.

It is an amenable number.

13972249 is a deficient number, since it is larger than the sum of its proper divisors (821915).

13972249 is an equidigital number, since it uses as much as digits as its factorization.

13972249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821914.

The product of its digits is 27216, while the sum is 37.

The square root of 13972249 is about 3737.9471638855. The cubic root of 13972249 is about 240.8548737999.

The spelling of 13972249 in words is "thirteen million, nine hundred seventy-two thousand, two hundred forty-nine".