199430605 has 8 divisors (see below), whose sum is σ = 261072864. Its totient is φ = 145040400.

The previous prime is 199430599. The next prime is 199430653. The reversal of 199430605 is 506034991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 199430605 - 2³ = 199430597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1812951 + ... + 1813060.

It is an arithmetic number, because the mean of its divisors is an integer number (32634108).

Almost surely, 2^199430605 is an apocalyptic number.

It is an amenable number.

199430605 is a deficient number, since it is larger than the sum of its proper divisors (61642259).

199430605 is a wasteful number, since it uses less digits than its factorization.

199430605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3626027.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 199430605 is about 14121.9901217923. The cubic root of 199430605 is about 584.2480464492.

The spelling of 199430605 in words is "one hundred ninety-nine million, four hundred thirty thousand, six hundred five".