200398798090 has 8 divisors (see below), whose sum is σ = 360717836580. Its totient is φ = 80159519232.

The previous prime is 200398798073. The next prime is 200398798099. The reversal of 200398798090 is 90897893002.

It can be written as a sum of positive squares in 2 ways, for example, as 184445339841 + 15953458249 = 429471^2 + 126307^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (200398798099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10019939895 + ... + 10019939914.

Almost surely, 2^200398798090 is an apocalyptic number.

200398798090 is a deficient number, since it is larger than the sum of its proper divisors (160319038490).

200398798090 is a wasteful number, since it uses less digits than its factorization.

200398798090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20039879816.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 200398798090 in words is "two hundred billion, three hundred ninety-eight million, seven hundred ninety-eight thousand, ninety".