13999501 has 4 divisors (see below), whose sum is σ = 14015232. Its totient is φ = 13983772.

The previous prime is 13999481. The next prime is 13999519. The reversal of 13999501 is 10599931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10599931 = 821 ⋅12911.

It is a cyclic number.

It is not a de Polignac number, because 13999501 - 2¹³ = 13991309 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 (13999301) 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, 6445 + ... + 8338.

It is an arithmetic number, because the mean of its divisors is an integer number (3503808).

Almost surely, 2^13999501 is an apocalyptic number.

It is an amenable number.

13999501 is a deficient number, since it is larger than the sum of its proper divisors (15731).

13999501 is an equidigital number, since it uses as much as digits as its factorization.

13999501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15730.

The product of its (nonzero) digits is 10935, while the sum is 37.

The square root of 13999501 is about 3741.5907044999. The cubic root of 13999501 is about 241.0113629050.

The spelling of 13999501 in words is "thirteen million, nine hundred ninety-nine thousand, five hundred one".