499997217 has 16 divisors (see below), whose sum is σ = 743031360. Its totient is φ = 297211392.

The previous prime is 499997203. The next prime is 499997219. The reversal of 499997217 is 712799994.

It is not a de Polignac number, because 499997217 - 2⁸ = 499996961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (499997219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257028 + ... + 258965.

It is an arithmetic number, because the mean of its divisors is an integer number (46439460).

Almost surely, 2^499997217 is an apocalyptic number.

It is an amenable number.

499997217 is a deficient number, since it is larger than the sum of its proper divisors (243034143).

499997217 is a wasteful number, since it uses less digits than its factorization.

499997217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516032.

The product of its digits is 2571912, while the sum is 57.

The square root of 499997217 is about 22360.6175451395. The cubic root of 499997217 is about 793.6990534023.

The spelling of 499997217 in words is "four hundred ninety-nine million, nine hundred ninety-seven thousand, two hundred seventeen".