199964622 has 64 divisors (see below), whose sum is σ = 490323456. Its totient is φ = 53496960.

The previous prime is 199964621. The next prime is 199964623. The reversal of 199964622 is 226469991.

199964622 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (199964621) and next prime (199964623).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199964621) 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 31 ways as a sum of consecutive naturals, for example, 14668 + ... + 24800.

It is an arithmetic number, because the mean of its divisors is an integer number (7661304).

Almost surely, 2^199964622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199964622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245161728).

199964622 is an abundant number, since it is smaller than the sum of its proper divisors (290358834).

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

199964622 is a wasteful number, since it uses less digits than its factorization.

199964622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10185.

The product of its digits is 419904, while the sum is 48.

The square root of 199964622 is about 14140.8847672273. The cubic root of 199964622 is about 584.7690636427.

The spelling of 199964622 in words is "one hundred ninety-nine million, nine hundred sixty-four thousand, six hundred twenty-two".