13909738 has 8 divisors (see below), whose sum is σ = 21067488. Its totient is φ = 6887244.

The previous prime is 13909717. The next prime is 13909741. The reversal of 13909738 is 83790931.

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

It is a super-2 number, since 2×13909738² = 386961622457288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13909738.

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, 33556 + ... + 33967.

It is an arithmetic number, because the mean of its divisors is an integer number (2633436).

Almost surely, 2^13909738 is an apocalyptic number.

13909738 is a deficient number, since it is larger than the sum of its proper divisors (7157750).

13909738 is a wasteful number, since it uses less digits than its factorization.

13909738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67628.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 13909738 is about 3729.5761153246. The cubic root of 13909738 is about 240.4951467361.

The spelling of 13909738 in words is "thirteen million, nine hundred nine thousand, seven hundred thirty-eight".