13938221400 has 96 divisors (see below), whose sum is σ = 45482654400. Its totient is φ = 3521232000.

The previous prime is 13938221393. The next prime is 13938221431. The reversal of 13938221400 is 412283931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 599926 + ... + 622725.

It is an arithmetic number, because the mean of its divisors is an integer number (473777650).

Almost surely, 2^13938221400 is an apocalyptic number.

13938221400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13938221400 is an abundant number, since it is smaller than the sum of its proper divisors (31544433000).

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

13938221400 is a wasteful number, since it uses less digits than its factorization.

13938221400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222689 (or 1222680 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 13938221400 in words is "thirteen billion, nine hundred thirty-eight million, two hundred twenty-one thousand, four hundred".