13993415 has 8 divisors (see below), whose sum is σ = 16867440. Its totient is φ = 11144512.

The previous prime is 13993411. The next prime is 13993429. The reversal of 13993415 is 51439931.

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

It is a cyclic number.

It is not a de Polignac number, because 13993415 - 2² = 13993411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13993411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5030 + ... + 7299.

It is an arithmetic number, because the mean of its divisors is an integer number (2108430).

Almost surely, 2^13993415 is an apocalyptic number.

13993415 is a deficient number, since it is larger than the sum of its proper divisors (2874025).

13993415 is a wasteful number, since it uses less digits than its factorization.

13993415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12561.

The product of its digits is 14580, while the sum is 35.

The square root of 13993415 is about 3740.7773256370. Note that the first 3 decimals coincide. The cubic root of 13993415 is about 240.9764329038.

The spelling of 13993415 in words is "thirteen million, nine hundred ninety-three thousand, four hundred fifteen".