13987823904 has 60 divisors (see below), whose sum is σ = 41137809174. Its totient is φ = 4662607104.

The previous prime is 13987823903. The next prime is 13987823939. The reversal of 13987823904 is 40932878931.

It can be written as a sum of positive squares in only one way, i.e., 13985427600 + 2396304 = 118260^2 + 1548^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (13987823903) 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 9 ways as a sum of consecutive naturals, for example, 2695677 + ... + 2700860.

Almost surely, 2^13987823904 is an apocalyptic number.

It is an amenable number.

13987823904 is an abundant number, since it is smaller than the sum of its proper divisors (27149985270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13987823904 is an equidigital number, since it uses as much as digits as its factorization.

13987823904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5396559 (or 5396542 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 13987823904 in words is "thirteen billion, nine hundred eighty-seven million, eight hundred twenty-three thousand, nine hundred four".