199854769 has 9 divisors (see below), whose sum is σ = 203848281. Its totient is φ = 195938820.

The previous prime is 199854761. The next prime is 199854773. The reversal of 199854769 is 967458991.

The square root of 199854769 is 14137.

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

It is not a de Polignac number, because 199854769 - 2³ = 199854761 is a prime.

It is a super-2 number, since 2×199854769² = 79883857384086722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199854761) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 947074 + ... + 947284.

It is an arithmetic number, because the mean of its divisors is an integer number (22649809).

Almost surely, 2^199854769 is an apocalyptic number.

199854769 is the 14137-th square number.

199854769 is the 7069-th centered octagonal number.

It is an amenable number.

199854769 is a deficient number, since it is larger than the sum of its proper divisors (3993512).

199854769 is an frugal number, since it uses more digits than its factorization.

199854769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 278 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 58.

The cubic root of 199854769 is about 584.6619606923.

The spelling of 199854769 in words is "one hundred ninety-nine million, eight hundred fifty-four thousand, seven hundred sixty-nine".