499997906 has 8 divisors (see below), whose sum is σ = 758424060. Its totient is φ = 247189888.

The previous prime is 499997887. The next prime is 499997963. The reversal of 499997906 is 609799994.

It can be written as a sum of positive squares in 2 ways, for example, as 474847681 + 25150225 = 21791^2 + 5015^2 .

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

It is a Curzon number.

It is an unprimeable number.

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, 1404311 + ... + 1404666.

Almost surely, 2^499997906 is an apocalyptic number.

499997906 is a deficient number, since it is larger than the sum of its proper divisors (258426154).

499997906 is a wasteful number, since it uses less digits than its factorization.

499997906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809068.

The product of its (nonzero) digits is 9920232, while the sum is 62.

The square root of 499997906 is about 22360.6329516854. The cubic root of 499997906 is about 793.6994179766.

The spelling of 499997906 in words is "four hundred ninety-nine million, nine hundred ninety-seven thousand, nine hundred six".