199769956 has 27 divisors (see below), whose sum is σ = 361192377. Its totient is φ = 96676560.

The previous prime is 199769939. The next prime is 199769989. The reversal of 199769956 is 659967991.

The square root of 199769956 is 14134.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 178756900 + 21013056 = 13370^2 + 4584^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 199769894 and 199769903.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1045821 + ... + 1046011.

Almost surely, 2^199769956 is an apocalyptic number.

199769956 is the 14134-th square number.

It is an amenable number.

199769956 is a deficient number, since it is larger than the sum of its proper divisors (161422421).

199769956 is an equidigital number, since it uses as much as digits as its factorization.

199769956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 230 counting only the distinct ones).

The product of its digits is 8266860, while the sum is 61.

The cubic root of 199769956 is about 584.5792440422.

The spelling of 199769956 in words is "one hundred ninety-nine million, seven hundred sixty-nine thousand, nine hundred fifty-six".