199089012 has 24 divisors (see below), whose sum is σ = 484739136. Its totient is φ = 63477568.

The previous prime is 199088993. The next prime is 199089013. The reversal of 199089012 is 210980991.

It is a happy number.

It is a super-2 number, since 2×199089012² = 79272869398272288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199089013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360393 + ... + 360944.

It is an arithmetic number, because the mean of its divisors is an integer number (20197464).

Almost surely, 2^199089012 is an apocalyptic number.

199089012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

199089012 is an abundant number, since it is smaller than the sum of its proper divisors (285650124).

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

199089012 is a wasteful number, since it uses less digits than its factorization.

199089012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721367 (or 721365 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 39.

The square root of 199089012 is about 14109.8905736366. The cubic root of 199089012 is about 583.9142810637.

It can be divided in two parts, 19908 and 9012, that added together give a triangular number (28920 = T₂₄₀).

The spelling of 199089012 in words is "one hundred ninety-nine million, eighty-nine thousand, twelve".