199895424 has 64 divisors (see below), whose sum is σ = 537030000. Its totient is φ = 65871872.

The previous prime is 199895417. The next prime is 199895453. The reversal of 199895424 is 424598991.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×199895424² = 79916361072279552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31252 + ... + 37100.

Almost surely, 2^199895424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199895424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268515000).

199895424 is an abundant number, since it is smaller than the sum of its proper divisors (337134576).

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

199895424 is an equidigital number, since it uses as much as digits as its factorization.

199895424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5955 (or 5943 counting only the distinct ones).

The product of its digits is 933120, while the sum is 51.

The square root of 199895424 is about 14138.4378203534. The cubic root of 199895424 is about 584.7016025125.

The spelling of 199895424 in words is "one hundred ninety-nine million, eight hundred ninety-five thousand, four hundred twenty-four".