499840417 has 8 divisors (see below), whose sum is σ = 509274216. Its totient is φ = 490476672.

The previous prime is 499840387. The next prime is 499840427. The reversal of 499840417 is 714048994.

It can be written as a sum of positive squares in 4 ways, for example, as 165096801 + 334743616 = 12849^2 + 18296^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499840417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499840427) 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 7 ways as a sum of consecutive naturals, for example, 2998 + ... + 31759.

It is an arithmetic number, because the mean of its divisors is an integer number (63659277).

Almost surely, 2^499840417 is an apocalyptic number.

It is an amenable number.

499840417 is a deficient number, since it is larger than the sum of its proper divisors (9433799).

499840417 is a wasteful number, since it uses less digits than its factorization.

499840417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35027.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 499840417 is about 22357.1111058652. Note that the first 4 decimals coincide. The cubic root of 499840417 is about 793.6160762583.

The spelling of 499840417 in words is "four hundred ninety-nine million, eight hundred forty thousand, four hundred seventeen".