13875789 has 4 divisors (see below), whose sum is σ = 18501056. Its totient is φ = 9250524.

The previous prime is 13875787. The next prime is 13875847. The reversal of 13875789 is 98757831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13875789 - 2¹ = 13875787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13875787) 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, 2312629 + ... + 2312634.

It is an arithmetic number, because the mean of its divisors is an integer number (4625264).

Almost surely, 2^13875789 is an apocalyptic number.

It is an amenable number.

13875789 is a deficient number, since it is larger than the sum of its proper divisors (4625267).

13875789 is an equidigital number, since it uses as much as digits as its factorization.

13875789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4625266.

The product of its digits is 423360, while the sum is 48.

The square root of 13875789 is about 3725.0220133578. The cubic root of 13875789 is about 240.2993313756.

The spelling of 13875789 in words is "thirteen million, eight hundred seventy-five thousand, seven hundred eighty-nine".