13750999 has 4 divisors (see below), whose sum is σ = 13759200. Its totient is φ = 13742800.

The previous prime is 13750993. The next prime is 13751021. The reversal of 13750999 is 99905731.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 99905731 = 5417 ⋅18443.

It is a cyclic number.

It is not a de Polignac number, because 13750999 - 2³ = 13750991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13750991) 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, 574 + ... + 5275.

It is an arithmetic number, because the mean of its divisors is an integer number (3439800).

Almost surely, 2^13750999 is an apocalyptic number.

13750999 is a deficient number, since it is larger than the sum of its proper divisors (8201).

13750999 is an equidigital number, since it uses as much as digits as its factorization.

13750999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8200.

The product of its (nonzero) digits is 76545, while the sum is 43.

The square root of 13750999 is about 3708.2339462337. The cubic root of 13750999 is about 239.5767946865.

The spelling of 13750999 in words is "thirteen million, seven hundred fifty thousand, nine hundred ninety-nine".