199424305 has 4 divisors (see below), whose sum is σ = 239309172. Its totient is φ = 159539440.

The previous prime is 199424299. The next prime is 199424327. The reversal of 199424305 is 503424991.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 83302129 + 116122176 = 9127^2 + 10776^2 .

It is not a de Polignac number, because 199424305 - 2¹⁷ = 199293233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19942426 + ... + 19942435.

It is an arithmetic number, because the mean of its divisors is an integer number (59827293).

Almost surely, 2^199424305 is an apocalyptic number.

It is an amenable number.

199424305 is a deficient number, since it is larger than the sum of its proper divisors (39884867).

199424305 is an equidigital number, since it uses as much as digits as its factorization.

199424305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39884866.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 199424305 is about 14121.7670636504. The cubic root of 199424305 is about 584.2418942650.

The spelling of 199424305 in words is "one hundred ninety-nine million, four hundred twenty-four thousand, three hundred five".