199989802 has 8 divisors (see below), whose sum is σ = 317630916. Its totient is φ = 94112832.

The previous prime is 199989793. The next prime is 199989817. The reversal of 199989802 is 208989991.

It can be written as a sum of positive squares in 2 ways, for example, as 198218241 + 1771561 = 14079^2 + 1331^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2940993 + ... + 2941060.

Almost surely, 2^199989802 is an apocalyptic number.

199989802 is a deficient number, since it is larger than the sum of its proper divisors (117641114).

199989802 is a wasteful number, since it uses less digits than its factorization.

199989802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5882072.

The product of its (nonzero) digits is 839808, while the sum is 55.

The square root of 199989802 is about 14141.7750653869. The cubic root of 199989802 is about 584.7936077627.

The spelling of 199989802 in words is "one hundred ninety-nine million, nine hundred eighty-nine thousand, eight hundred two".