13943938 has 8 divisors (see below), whose sum is σ = 20955132. Its totient is φ = 6958896.

The previous prime is 13943933. The next prime is 13943947. The reversal of 13943938 is 83934931.

It can be written as a sum of positive squares in 2 ways, for example, as 13935289 + 8649 = 3733^2 + 93^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 13943938.

It is not an unprimeable number, because it can be changed into a prime (13943933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5145 + ... + 7372.

Almost surely, 2^13943938 is an apocalyptic number.

13943938 is a deficient number, since it is larger than the sum of its proper divisors (7011194).

13943938 is a wasteful number, since it uses less digits than its factorization.

13943938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13076.

The product of its digits is 69984, while the sum is 40.

The square root of 13943938 is about 3734.1582719537. The cubic root of 13943938 is about 240.6920879558.

The spelling of 13943938 in words is "thirteen million, nine hundred forty-three thousand, nine hundred thirty-eight".