199758944 has 48 divisors (see below), whose sum is σ = 490323456. Its totient is φ = 77827200.

The previous prime is 199758907. The next prime is 199758971. The reversal of 199758944 is 449857991.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a self number, because there is not a number n which added to its sum of digits gives 199758944.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38072 + ... + 42999.

It is an arithmetic number, because the mean of its divisors is an integer number (10215072).

Almost surely, 2^199758944 is an apocalyptic number.

199758944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

199758944 is an abundant number, since it is smaller than the sum of its proper divisors (290564512).

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

199758944 is a wasteful number, since it uses less digits than its factorization.

199758944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81099 (or 81091 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 56.

The square root of 199758944 is about 14133.6104375351. The cubic root of 199758944 is about 584.5685025122.

The spelling of 199758944 in words is "one hundred ninety-nine million, seven hundred fifty-eight thousand, nine hundred forty-four".