13900447923 has 16 divisors (see below), whose sum is σ = 19584568320. Its totient is φ = 8751847104.

The previous prime is 13900447921. The next prime is 13900447931. The reversal of 13900447923 is 32974400931.

It is not a de Polignac number, because 13900447923 - 2¹ = 13900447921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13900447921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1269586 + ... + 1280487.

It is an arithmetic number, because the mean of its divisors is an integer number (1224035520).

Almost surely, 2^13900447923 is an apocalyptic number.

13900447923 is a deficient number, since it is larger than the sum of its proper divisors (5684120397).

13900447923 is a wasteful number, since it uses less digits than its factorization.

13900447923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550178.

The product of its (nonzero) digits is 163296, while the sum is 42.

The spelling of 13900447923 in words is "thirteen billion, nine hundred million, four hundred forty-seven thousand, nine hundred twenty-three".