199994634 has 48 divisors (see below), whose sum is σ = 506755392. Its totient is φ = 55810944.

The previous prime is 199994633. The next prime is 199994689. The reversal of 199994634 is 436499991.

199994634 is a `hidden beast` number, since 1 + 99 + 99 + 463 + 4 = 666.

199994634 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199994633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13039 + ... + 23874.

It is an arithmetic number, because the mean of its divisors is an integer number (10557404).

Almost surely, 2^199994634 is an apocalyptic number.

199994634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

199994634 is an abundant number, since it is smaller than the sum of its proper divisors (306760758).

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

199994634 is a wasteful number, since it uses less digits than its factorization.

199994634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36971 (or 36968 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 199994634 is about 14141.9459057090. The cubic root of 199994634 is about 584.7983175027.

The spelling of 199994634 in words is "one hundred ninety-nine million, nine hundred ninety-four thousand, six hundred thirty-four".