199999304404 has 6 divisors (see below), whose sum is σ = 349998782714. Its totient is φ = 99999652200.

The previous prime is 199999304387. The next prime is 199999304411. The reversal of 199999304404 is 404403999991.

It can be written as a sum of positive squares in only one way, i.e., 198290308804 + 1708995600 = 445298^2 + 41340^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24999913047 + ... + 24999913054.

Almost surely, 2^199999304404 is an apocalyptic number.

It is an amenable number.

199999304404 is a deficient number, since it is larger than the sum of its proper divisors (149999478310).

199999304404 is a wasteful number, since it uses less digits than its factorization.

199999304404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49999826105 (or 49999826103 counting only the distinct ones).

The product of its (nonzero) digits is 11337408, while the sum is 61.

The spelling of 199999304404 in words is "one hundred ninety-nine billion, nine hundred ninety-nine million, three hundred four thousand, four hundred four".