199804747 has 2 divisors, whose sum is σ = 199804748. Its totient is φ = 199804746.

The previous prime is 199804729. The next prime is 199804799. The reversal of 199804747 is 747408991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199804747 - 2¹¹ = 199802699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199804747.

It is not a weakly prime, because it can be changed into another prime (199804547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99902373 + 99902374.

It is an arithmetic number, because the mean of its divisors is an integer number (99902374).

Almost surely, 2^199804747 is an apocalyptic number.

199804747 is a deficient number, since it is larger than the sum of its proper divisors (1).

199804747 is an equidigital number, since it uses as much as digits as its factorization.

199804747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 199804747 is about 14135.2307020437. The cubic root of 199804747 is about 584.6131779336.

The spelling of 199804747 in words is "one hundred ninety-nine million, eight hundred four thousand, seven hundred forty-seven".