13900689 has 12 divisors (see below), whose sum is σ = 21904272. Its totient is φ = 8424600.

The previous prime is 13900687. The next prime is 13900697. The reversal of 13900689 is 98600931.

It is not a de Polignac number, because 13900689 - 2¹ = 13900687 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13900687) 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 11 ways as a sum of consecutive naturals, for example, 70107 + ... + 70304.

It is an arithmetic number, because the mean of its divisors is an integer number (1825356).

Almost surely, 2^13900689 is an apocalyptic number.

It is an amenable number.

13900689 is a deficient number, since it is larger than the sum of its proper divisors (8003583).

13900689 is a wasteful number, since it uses less digits than its factorization.

13900689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140428 (or 140425 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 13900689 is about 3728.3627774132. The cubic root of 13900689 is about 240.4429839354.

The spelling of 13900689 in words is "thirteen million, nine hundred thousand, six hundred eighty-nine".