200020999 has 4 divisors (see below), whose sum is σ = 210548440. Its totient is φ = 189493560.

The previous prime is 200020991. The next prime is 200021009. The reversal of 200020999 is 999020002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 200020999 - 2³ = 200020991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200020999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200020991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5263692 + ... + 5263729.

It is an arithmetic number, because the mean of its divisors is an integer number (52637110).

Almost surely, 2^200020999 is an apocalyptic number.

200020999 is a deficient number, since it is larger than the sum of its proper divisors (10527441).

200020999 is a wasteful number, since it uses less digits than its factorization.

200020999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10527440.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 200020999 is about 14142.8780310091. The cubic root of 200020999 is about 584.8240140758.

The spelling of 200020999 in words is "two hundred million, twenty thousand, nine hundred ninety-nine".