20090799 has 24 divisors (see below), whose sum is σ = 30730752. Its totient is φ = 12621840.

The previous prime is 20090789. The next prime is 20090801. The reversal of 20090799 is 99709002.

It is not a de Polignac number, because 20090799 - 2⁷ = 20090671 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20090729) 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, 14014 + ... + 15380.

It is an arithmetic number, because the mean of its divisors is an integer number (1280448).

Almost surely, 2^20090799 is an apocalyptic number.

20090799 is a deficient number, since it is larger than the sum of its proper divisors (10639953).

20090799 is a wasteful number, since it uses less digits than its factorization.

20090799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 20090799 is about 4482.2760959138. The cubic root of 20090799 is about 271.8519189284.

The spelling of 20090799 in words is "twenty million, ninety thousand, seven hundred ninety-nine".