199999359 has 12 divisors (see below), whose sum is σ = 330157776. Its totient is φ = 114285312.

The previous prime is 199999357. The next prime is 199999361. The reversal of 199999359 is 953999991.

199999359 is a `hidden beast` number, since 199 + 9 + 99 + 359 = 666.

It is an interprime number because it is at equal distance from previous prime (199999357) and next prime (199999361).

It is not a de Polignac number, because 199999359 - 2¹ = 199999357 is a prime.

It is a super-4 number, since 4×199999359⁴ (a number of 34 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 3174593 = 199999359 / (1 + 9 + 9 + 9 + 9 + 9 + 3 + 5 + 9).

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 199999296 and 199999305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199999357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1587234 + ... + 1587359.

It is an arithmetic number, because the mean of its divisors is an integer number (27513148).

Almost surely, 2^199999359 is an apocalyptic number.

199999359 is a deficient number, since it is larger than the sum of its proper divisors (130158417).

199999359 is a wasteful number, since it uses less digits than its factorization.

199999359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174606 (or 3174603 counting only the distinct ones).

The product of its digits is 7971615, while the sum is 63.

The square root of 199999359 is about 14142.1129609405. The cubic root of 199999359 is about 584.8029228768.

The spelling of 199999359 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, three hundred fifty-nine".