199291424 has 24 divisors (see below), whose sum is σ = 394053660. Its totient is φ = 99214336.

The previous prime is 199291423. The next prime is 199291511. The reversal of 199291424 is 424192991.

It can be written as a sum of positive squares in 2 ways, for example, as 197683600 + 1607824 = 14060^2 + 1268^2 .

It is not an unprimeable number, because it can be changed into a prime (199291423) 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, 5909 + ... + 20820.

Almost surely, 2^199291424 is an apocalyptic number.

It is an amenable number.

199291424 is a deficient number, since it is larger than the sum of its proper divisors (194762236).

199291424 is a wasteful number, since it uses less digits than its factorization.

199291424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26972 (or 26964 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The square root of 199291424 is about 14117.0614505994. The cubic root of 199291424 is about 584.1121008299.

The spelling of 199291424 in words is "one hundred ninety-nine million, two hundred ninety-one thousand, four hundred twenty-four".