20017199 has 8 divisors (see below), whose sum is σ = 21282912. Its totient is φ = 18784480.

The previous prime is 20017189. The next prime is 20017223. The reversal of 20017199 is 99171002.

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 20017199 - 2⁴ = 20017183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20017169) 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, 6992 + ... + 9429.

It is an arithmetic number, because the mean of its divisors is an integer number (2660364).

Almost surely, 2^20017199 is an apocalyptic number.

20017199 is a deficient number, since it is larger than the sum of its proper divisors (1265713).

20017199 is a wasteful number, since it uses less digits than its factorization.

20017199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16497.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 20017199 is about 4474.0584484336. The cubic root of 20017199 is about 271.5195481472.

The spelling of 20017199 in words is "twenty million, seventeen thousand, one hundred ninety-nine".