13788489 has 16 divisors (see below), whose sum is σ = 21599424. Its totient is φ = 7713600.

The previous prime is 13788487. The next prime is 13788493. The reversal of 13788489 is 98488731.

It is not a de Polignac number, because 13788489 - 2¹ = 13788487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13788487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15642 + ... + 16499.

It is an arithmetic number, because the mean of its divisors is an integer number (1349964).

Almost surely, 2^13788489 is an apocalyptic number.

It is an amenable number.

13788489 is a deficient number, since it is larger than the sum of its proper divisors (7810935).

13788489 is a wasteful number, since it uses less digits than its factorization.

13788489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32168.

The product of its digits is 387072, while the sum is 48.

The square root of 13788489 is about 3713.2854724624. The cubic root of 13788489 is about 239.7943203109.

The spelling of 13788489 in words is "thirteen million, seven hundred eighty-eight thousand, four hundred eighty-nine".