13999403 has 4 divisors (see below), whose sum is σ = 15272088. Its totient is φ = 12726720.

The previous prime is 13999399. The next prime is 13999421. The reversal of 13999403 is 30499931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13999403 - 2² = 13999399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13999423) 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, 636326 + ... + 636347.

It is an arithmetic number, because the mean of its divisors is an integer number (3818022).

Almost surely, 2^13999403 is an apocalyptic number.

13999403 is a deficient number, since it is larger than the sum of its proper divisors (1272685).

13999403 is a wasteful number, since it uses less digits than its factorization.

13999403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272684.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 13999403 is about 3741.5776084427. The cubic root of 13999403 is about 241.0108005238.

The spelling of 13999403 in words is "thirteen million, nine hundred ninety-nine thousand, four hundred three".