199454347 has 4 divisors (see below), whose sum is σ = 199529856. Its totient is φ = 199378840.

The previous prime is 199454329. The next prime is 199454351. The reversal of 199454347 is 743454991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 199454347 - 2⁷ = 199454219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 199454297 and 199454306.

It is not an unprimeable number, because it can be changed into a prime (199454147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33643 + ... + 39124.

It is an arithmetic number, because the mean of its divisors is an integer number (49882464).

Almost surely, 2^199454347 is an apocalyptic number.

199454347 is a deficient number, since it is larger than the sum of its proper divisors (75509).

199454347 is an equidigital number, since it uses as much as digits as its factorization.

199454347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75508.

The product of its digits is 544320, while the sum is 46.

The square root of 199454347 is about 14122.8307006775. The cubic root of 199454347 is about 584.2712302307.

The spelling of 199454347 in words is "one hundred ninety-nine million, four hundred fifty-four thousand, three hundred forty-seven".