199442450 has 48 divisors (see below), whose sum is σ = 382475520. Its totient is φ = 77328000.

The previous prime is 199442431. The next prime is 199442459. The reversal of 199442450 is 54244991.

It is not an unprimeable number, because it can be changed into a prime (199442459) 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 23 ways as a sum of consecutive naturals, for example, 555371 + ... + 555729.

It is an arithmetic number, because the mean of its divisors is an integer number (7968240).

Almost surely, 2^199442450 is an apocalyptic number.

199442450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199442450 is a deficient number, since it is larger than the sum of its proper divisors (183033070).

199442450 is a wasteful number, since it uses less digits than its factorization.

199442450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 199442450 is about 14122.4094969662. The cubic root of 199442450 is about 584.2596131813.

It can be divided in two parts, 1994 and 42450, that added together give a palindrome (44444).

The spelling of 199442450 in words is "one hundred ninety-nine million, four hundred forty-two thousand, four hundred fifty".