199521344 has 28 divisors (see below), whose sum is σ = 431919888. Its totient is φ = 90691200.

The previous prime is 199521331. The next prime is 199521347. The reversal of 199521344 is 443125991.

It is a junction number, because it is equal to n+sod(n) for n = 199521298 and 199521307.

It is not an unprimeable number, because it can be changed into a prime (199521347) 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, 141002 + ... + 142409.

Almost surely, 2^199521344 is an apocalyptic number.

It is an amenable number.

199521344 is an abundant number, since it is smaller than the sum of its proper divisors (232398544).

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

199521344 is a wasteful number, since it uses less digits than its factorization.

199521344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283434 (or 283424 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The square root of 199521344 is about 14125.2024410272. The cubic root of 199521344 is about 584.3366420875.

The spelling of 199521344 in words is "one hundred ninety-nine million, five hundred twenty-one thousand, three hundred forty-four".