13899745894 has 32 divisors (see below), whose sum is σ = 22320313344. Its totient is φ = 6477514560.

The previous prime is 13899745861. The next prime is 13899745901. The reversal of 13899745894 is 49854799831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253779 + ... + 303649.

It is an arithmetic number, because the mean of its divisors is an integer number (697509792).

Almost surely, 2^13899745894 is an apocalyptic number.

13899745894 is a deficient number, since it is larger than the sum of its proper divisors (8420567450).

13899745894 is a wasteful number, since it uses less digits than its factorization.

13899745894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50052.

The product of its digits is 78382080, while the sum is 67.

The spelling of 13899745894 in words is "thirteen billion, eight hundred ninety-nine million, seven hundred forty-five thousand, eight hundred ninety-four".