199424393 has 8 divisors (see below), whose sum is σ = 231036288. Its totient is φ = 168593184.

The previous prime is 199424371. The next prime is 199424419. The reversal of 199424393 is 393424991.

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

It is a cyclic number.

It is not a de Polignac number, because 199424393 - 2¹² = 199420297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199424363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194621 + ... + 195642.

It is an arithmetic number, because the mean of its divisors is an integer number (28879536).

Almost surely, 2^199424393 is an apocalyptic number.

It is an amenable number.

199424393 is a deficient number, since it is larger than the sum of its proper divisors (31611895).

199424393 is an equidigital number, since it uses as much as digits as its factorization.

199424393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390343.

The product of its digits is 209952, while the sum is 44.

The square root of 199424393 is about 14121.7701794074. The cubic root of 199424393 is about 584.2419802012.

The spelling of 199424393 in words is "one hundred ninety-nine million, four hundred twenty-four thousand, three hundred ninety-three".