13888438 has 8 divisors (see below), whose sum is σ = 21225888. Its totient is φ = 6813144.

The previous prime is 13888421. The next prime is 13888447. The reversal of 13888438 is 83488831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13888394 and 13888403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65406 + ... + 65617.

It is an arithmetic number, because the mean of its divisors is an integer number (2653236).

Almost surely, 2^13888438 is an apocalyptic number.

13888438 is a deficient number, since it is larger than the sum of its proper divisors (7337450).

13888438 is a wasteful number, since it uses less digits than its factorization.

13888438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131078.

The product of its digits is 147456, while the sum is 43.

The square root of 13888438 is about 3726.7194689163. The cubic root of 13888438 is about 240.3723271792.

The spelling of 13888438 in words is "thirteen million, eight hundred eighty-eight thousand, four hundred thirty-eight".