199217934 has 128 divisors (see below), whose sum is σ = 493516800. Its totient is φ = 59304960.

The previous prime is 199217911. The next prime is 199217957. The reversal of 199217934 is 439712991.

It is an interprime number because it is at equal distance from previous prime (199217911) and next prime (199217957).

It is a self number, because there is not a number n which added to its sum of digits gives 199217934.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2521707 + ... + 2521785.

It is an arithmetic number, because the mean of its divisors is an integer number (3855600).

Almost surely, 2^199217934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199217934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246758400).

199217934 is an abundant number, since it is smaller than the sum of its proper divisors (294298866).

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

199217934 is a wasteful number, since it uses less digits than its factorization.

199217934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 209 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 199217934 is about 14114.4583317958. The cubic root of 199217934 is about 584.0402936325.

The spelling of 199217934 in words is "one hundred ninety-nine million, two hundred seventeen thousand, nine hundred thirty-four".