199424634 has 8 divisors (see below), whose sum is σ = 398849280. Its totient is φ = 66474876.

The previous prime is 199424623. The next prime is 199424639. The reversal of 199424634 is 436424991.

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

199424634 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (199424639) 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, 16618714 + ... + 16618725.

It is an arithmetic number, because the mean of its divisors is an integer number (49856160).

Almost surely, 2^199424634 is an apocalyptic number.

199424634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199424634 is a wasteful number, since it uses less digits than its factorization.

199424634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33237444.

The product of its digits is 186624, while the sum is 42.

The square root of 199424634 is about 14121.7787123294. The cubic root of 199424634 is about 584.2422155490.

The spelling of 199424634 in words is "one hundred ninety-nine million, four hundred twenty-four thousand, six hundred thirty-four".