13993251 has 8 divisors (see below), whose sum is σ = 18714384. Its totient is φ = 9300480.

The previous prime is 13993237. The next prime is 13993267. The reversal of 13993251 is 15239931.

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

It is not a de Polignac number, because 13993251 - 2¹¹ = 13991203 is a prime.

It is a super-2 number, since 2×13993251² = 391622147098002, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (13993201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5910 + ... + 7931.

It is an arithmetic number, because the mean of its divisors is an integer number (2339298).

Almost surely, 2^13993251 is an apocalyptic number.

13993251 is a deficient number, since it is larger than the sum of its proper divisors (4721133).

13993251 is a wasteful number, since it uses less digits than its factorization.

13993251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14181.

The product of its digits is 7290, while the sum is 33.

The square root of 13993251 is about 3740.7554049951. The cubic root of 13993251 is about 240.9754915017.

The spelling of 13993251 in words is "thirteen million, nine hundred ninety-three thousand, two hundred fifty-one".