199489536 has 144 divisors (see below), whose sum is σ = 587714400. Its totient is φ = 65175552.

The previous prime is 199489523. The next prime is 199489567. The reversal of 199489536 is 635984991.

199489536 is a `hidden beast` number, since 19 + 94 + 8 + 9 + 536 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1456060 + ... + 1456196.

It is an arithmetic number, because the mean of its divisors is an integer number (4081350).

Almost surely, 2^199489536 is an apocalyptic number.

199489536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199489536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293857200).

199489536 is an abundant number, since it is smaller than the sum of its proper divisors (388224864).

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

199489536 is a wasteful number, since it uses less digits than its factorization.

199489536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 221 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 199489536 is about 14124.0764653835. The cubic root of 199489536 is about 584.3055884880.

The spelling of 199489536 in words is "one hundred ninety-nine million, four hundred eighty-nine thousand, five hundred thirty-six".