13937489 has 4 divisors (see below), whose sum is σ = 14094180. Its totient is φ = 13780800.

The previous prime is 13937449. The next prime is 13937491. The reversal of 13937489 is 98473931.

It is a happy number.

13937489 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, and also an emirpimes, since its reverse is a distinct semiprime: 98473931 = 4817 ⋅20443.

It can be written as a sum of positive squares in 2 ways, for example, as 9241600 + 4695889 = 3040^2 + 2167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13937489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13937449) 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, 78212 + ... + 78389.

It is an arithmetic number, because the mean of its divisors is an integer number (3523545).

Almost surely, 2^13937489 is an apocalyptic number.

It is an amenable number.

13937489 is a deficient number, since it is larger than the sum of its proper divisors (156691).

13937489 is an equidigital number, since it uses as much as digits as its factorization.

13937489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156690.

The product of its digits is 163296, while the sum is 44.

The square root of 13937489 is about 3733.2946575378. The cubic root of 13937489 is about 240.6549759474.

The spelling of 13937489 in words is "thirteen million, nine hundred thirty-seven thousand, four hundred eighty-nine".