14001999 has 24 divisors (see below), whose sum is σ = 21737520. Its totient is φ = 7983360.

The previous prime is 14001989. The next prime is 14002003. The reversal of 14001999 is 99910041.

It is not a de Polignac number, because 14001999 - 2¹⁶ = 13936463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14001919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5037 + ... + 7305.

It is an arithmetic number, because the mean of its divisors is an integer number (905730).

Almost surely, 2^14001999 is an apocalyptic number.

14001999 is a deficient number, since it is larger than the sum of its proper divisors (7735521).

14001999 is a wasteful number, since it uses less digits than its factorization.

14001999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311 (or 2300 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 14001999 is about 3741.9245048504. The cubic root of 14001999 is about 241.0256970011.

The spelling of 14001999 in words is "fourteen million, one thousand, nine hundred ninety-nine".