199434238 has 4 divisors (see below), whose sum is σ = 299151360. Its totient is φ = 99717118.

The previous prime is 199434229. The next prime is 199434251. The reversal of 199434238 is 832434991.

199434238 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 832434991 = 37 ⋅22498243.

It is a junction number, because it is equal to n+sod(n) for n = 199434194 and 199434203.

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, 49858558 + ... + 49858561.

It is an arithmetic number, because the mean of its divisors is an integer number (74787840).

Almost surely, 2^199434238 is an apocalyptic number.

199434238 is a deficient number, since it is larger than the sum of its proper divisors (99717122).

199434238 is an equidigital number, since it uses as much as digits as its factorization.

199434238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99717121.

The product of its digits is 186624, while the sum is 43.

The square root of 199434238 is about 14122.1187503859. The cubic root of 199434238 is about 584.2515941499.

The spelling of 199434238 in words is "one hundred ninety-nine million, four hundred thirty-four thousand, two hundred thirty-eight".