199760747 has 2 divisors, whose sum is σ = 199760748. Its totient is φ = 199760746.

The previous prime is 199760731. The next prime is 199760749. The reversal of 199760747 is 747067991.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199760747 - 2⁴ = 199760731 is a prime.

Together with 199760749, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 199760695 and 199760704.

It is not a weakly prime, because it can be changed into another prime (199760749) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99880373 + 99880374.

It is an arithmetic number, because the mean of its divisors is an integer number (99880374).

Almost surely, 2^199760747 is an apocalyptic number.

199760747 is a deficient number, since it is larger than the sum of its proper divisors (1).

199760747 is an equidigital number, since it uses as much as digits as its factorization.

199760747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 199760747 is about 14133.6742215179. The cubic root of 199760747 is about 584.5702612551.

The spelling of 199760747 in words is "one hundred ninety-nine million, seven hundred sixty thousand, seven hundred forty-seven".