199494240 has 96 divisors (see below), whose sum is σ = 685552896. Its totient is φ = 48360960.

The previous prime is 199494223. The next prime is 199494241. The reversal of 199494240 is 42494991.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 199494192 and 199494201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199494241) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13612 + ... + 24171.

It is an arithmetic number, because the mean of its divisors is an integer number (7141176).

Almost surely, 2^199494240 is an apocalyptic number.

199494240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199494240 is an abundant number, since it is smaller than the sum of its proper divisors (486058656).

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

199494240 is a wasteful number, since it uses less digits than its factorization.

199494240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37812 (or 37804 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 199494240 is about 14124.2429885640. The cubic root of 199494240 is about 584.3101811297.

The spelling of 199494240 in words is "one hundred ninety-nine million, four hundred ninety-four thousand, two hundred forty".