199084434539 has 4 divisors (see below), whose sum is σ = 199347426624. Its totient is φ = 198821442456.

The previous prime is 199084434503. The next prime is 199084434599. The reversal of 199084434539 is 935434480991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 935434480991 = 571 ⋅1638239021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199084434539 is a prime.

It is a super-2 number, since 2×199084434539² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199084434599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131494907 + ... + 131496420.

It is an arithmetic number, because the mean of its divisors is an integer number (49836856656).

Almost surely, 2^199084434539 is an apocalyptic number.

199084434539 is a deficient number, since it is larger than the sum of its proper divisors (262992085).

199084434539 is an equidigital number, since it uses as much as digits as its factorization.

199084434539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262992084.

The product of its (nonzero) digits is 16796160, while the sum is 59.

The spelling of 199084434539 in words is "one hundred ninety-nine billion, eighty-four million, four hundred thirty-four thousand, five hundred thirty-nine".