13903938 has 12 divisors (see below), whose sum is σ = 30125238. Its totient is φ = 4634640.

The previous prime is 13903889. The next prime is 13903949. The reversal of 13903938 is 83930931.

It can be written as a sum of positive squares in only one way, i.e., 12089529 + 1814409 = 3477^2 + 1347^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 386203 + ... + 386238.

Almost surely, 2^13903938 is an apocalyptic number.

13903938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13903938 is an abundant number, since it is smaller than the sum of its proper divisors (16221300).

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

13903938 is a wasteful number, since it uses less digits than its factorization.

13903938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772449 (or 772446 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 13903938 is about 3728.7984659941. The cubic root of 13903938 is about 240.4617153426.

It can be divided in two parts, 13903 and 938, that added together give a palindrome (14841).

The spelling of 13903938 in words is "thirteen million, nine hundred three thousand, nine hundred thirty-eight".