199999604 has 24 divisors (see below), whose sum is σ = 403545408. Its totient is φ = 84954240.

The previous prime is 199999601. The next prime is 199999607. The reversal of 199999604 is 406999991.

199999604 = 53² + 54² + ... + 843².

199999604 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (199999601) and next prime (199999607).

It is a self number, because there is not a number n which added to its sum of digits gives 199999604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199999601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28442 + ... + 34769.

It is an arithmetic number, because the mean of its divisors is an integer number (16814392).

Almost surely, 2^199999604 is an apocalyptic number.

199999604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

199999604 is an abundant number, since it is smaller than the sum of its proper divisors (203545804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199999604 is a wasteful number, since it uses less digits than its factorization.

199999604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63335 (or 63333 counting only the distinct ones).

The product of its (nonzero) digits is 1417176, while the sum is 56.

The square root of 199999604 is about 14142.1216230098. The cubic root of 199999604 is about 584.8031616720.

The spelling of 199999604 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, six hundred four".