199399995 has 64 divisors (see below), whose sum is σ = 373248000. Its totient is φ = 100805760.

The previous prime is 199399979. The next prime is 199399997. The reversal of 199399995 is 599993991.

It is not a de Polignac number, because 199399995 - 2⁴ = 199399979 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (199399997) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 462430 + ... + 462860.

It is an arithmetic number, because the mean of its divisors is an integer number (5832000).

Almost surely, 2^199399995 is an apocalyptic number.

199399995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

199399995 is a deficient number, since it is larger than the sum of its proper divisors (173848005).

199399995 is a wasteful number, since it uses less digits than its factorization.

199399995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 611 counting only the distinct ones).

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

The square root of 199399995 is about 14120.9063094406. The cubic root of 199399995 is about 584.2181534316.

The spelling of 199399995 in words is "one hundred ninety-nine million, three hundred ninety-nine thousand, nine hundred ninety-five".