199190434 has 4 divisors (see below), whose sum is σ = 298785654. Its totient is φ = 99595216.

The previous prime is 199190417. The next prime is 199190447. The reversal of 199190434 is 434091991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434091991 = 17 ⋅25534823.

It can be written as a sum of positive squares in only one way, i.e., 181575625 + 17614809 = 13475^2 + 4197^2 .

It is a super-3 number, since 3×199190434³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49797607 + ... + 49797610.

Almost surely, 2^199190434 is an apocalyptic number.

199190434 is a deficient number, since it is larger than the sum of its proper divisors (99595220).

199190434 is an equidigital number, since it uses as much as digits as its factorization.

199190434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99595219.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 199190434 is about 14113.4841198054. The cubic root of 199190434 is about 584.0134187978.

The spelling of 199190434 in words is "one hundred ninety-nine million, one hundred ninety thousand, four hundred thirty-four".