499999947 has 4 divisors (see below), whose sum is σ = 666666600. Its totient is φ = 333333296.

The previous prime is 499999931. The next prime is 499999993. The reversal of 499999947 is 749999994.

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 499999947 - 2⁴ = 499999931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499999547) 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, 83333322 + ... + 83333327.

It is an arithmetic number, because the mean of its divisors is an integer number (166666650).

Almost surely, 2^499999947 is an apocalyptic number.

499999947 is a deficient number, since it is larger than the sum of its proper divisors (166666653).

499999947 is a wasteful number, since it uses less digits than its factorization.

499999947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166666652.

The product of its digits is 59521392, while the sum is 69.

The square root of 499999947 is about 22360.6785898818. The cubic root of 499999947 is about 793.7004979400.

The spelling of 499999947 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred forty-seven".