13900389 has 4 divisors (see below), whose sum is σ = 18533856. Its totient is φ = 9266924.

The previous prime is 13900387. The next prime is 13900409. The reversal of 13900389 is 98300931.

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 a cyclic number.

It is not a de Polignac number, because 13900389 - 2¹ = 13900387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13900387) 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 3 ways as a sum of consecutive naturals, for example, 2316729 + ... + 2316734.

It is an arithmetic number, because the mean of its divisors is an integer number (4633464).

Almost surely, 2^13900389 is an apocalyptic number.

It is an amenable number.

13900389 is a deficient number, since it is larger than the sum of its proper divisors (4633467).

13900389 is an equidigital number, since it uses as much as digits as its factorization.

13900389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4633466.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 13900389 is about 3728.3225450596. The cubic root of 13900389 is about 240.4412542031.

The spelling of 13900389 in words is "thirteen million, nine hundred thousand, three hundred eighty-nine".