199408338 has 32 divisors (see below), whose sum is σ = 453942720. Its totient is φ = 64847520.

The previous prime is 199408291. The next prime is 199408343. The reversal of 199408338 is 833804991.

It is a junction number, because it is equal to n+sod(n) for n = 199408293 and 199408302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42820 + ... + 47247.

It is an arithmetic number, because the mean of its divisors is an integer number (14185710).

Almost surely, 2^199408338 is an apocalyptic number.

199408338 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

199408338 is an abundant number, since it is smaller than the sum of its proper divisors (254534382).

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

199408338 is a wasteful number, since it uses less digits than its factorization.

199408338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90119 (or 90113 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 199408338 is about 14121.2017194005. The cubic root of 199408338 is about 584.2263013156.

The spelling of 199408338 in words is "one hundred ninety-nine million, four hundred eight thousand, three hundred thirty-eight".