17989391299 has 8 divisors (see below), whose sum is σ = 19639867392. Its totient is φ = 16341428040.

The previous prime is 17989391267. The next prime is 17989391309. The reversal of 17989391299 is 99219398971.

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 17989391299 - 2⁵ = 17989391267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17989391209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613219 + ... + 641884.

It is an arithmetic number, because the mean of its divisors is an integer number (2454983424).

Almost surely, 2^17989391299 is an apocalyptic number.

17989391299 is a deficient number, since it is larger than the sum of its proper divisors (1650476093).

17989391299 is a wasteful number, since it uses less digits than its factorization.

17989391299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256417.

The product of its digits is 19840464, while the sum is 67.

The spelling of 17989391299 in words is "seventeen billion, nine hundred eighty-nine million, three hundred ninety-one thousand, two hundred ninety-nine".