199944460 has 24 divisors (see below), whose sum is σ = 423603936. Its totient is φ = 79269120.

The previous prime is 199944431. The next prime is 199944487. The reversal of 199944460 is 64449991.

It is a self number, because there is not a number n which added to its sum of digits gives 199944460.

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, 41976 + ... + 46495.

It is an arithmetic number, because the mean of its divisors is an integer number (17650164).

Almost surely, 2^199944460 is an apocalyptic number.

199944460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199944460 is an abundant number, since it is smaller than the sum of its proper divisors (223659476).

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

199944460 is a wasteful number, since it uses less digits than its factorization.

199944460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88593 (or 88591 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 199944460 is about 14140.1718518553. The cubic root of 199944460 is about 584.7494093158.

The spelling of 199944460 in words is "one hundred ninety-nine million, nine hundred forty-four thousand, four hundred sixty".