199356949 has 8 divisors (see below), whose sum is σ = 228926880. Its totient is φ = 171694800.

The previous prime is 199356947. The next prime is 199356961. The reversal of 199356949 is 949653991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199356949 - 2¹ = 199356947 is a prime.

It is a super-2 number, since 2×199356949² = 79486386229177202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199356949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199356947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476722 + ... + 477139.

It is an arithmetic number, because the mean of its divisors is an integer number (28615860).

Almost surely, 2^199356949 is an apocalyptic number.

199356949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

199356949 is a deficient number, since it is larger than the sum of its proper divisors (29569931).

199356949 is a wasteful number, since it uses less digits than its factorization.

199356949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953891.

The product of its digits is 2361960, while the sum is 55.

The square root of 199356949 is about 14119.3820332194. The cubic root of 199356949 is about 584.1761105277.

The spelling of 199356949 in words is "one hundred ninety-nine million, three hundred fifty-six thousand, nine hundred forty-nine".