509994722 has 8 divisors (see below), whose sum is σ = 765435216. Its totient is φ = 254849652.

The previous prime is 509994703. The next prime is 509994743. The reversal of 509994722 is 227499905.

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

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, 69488 + ... + 76475.

It is an arithmetic number, because the mean of its divisors is an integer number (95679402).

Almost surely, 2^509994722 is an apocalyptic number.

509994722 is a deficient number, since it is larger than the sum of its proper divisors (255440494).

509994722 is a wasteful number, since it uses less digits than its factorization.

509994722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147712.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 509994722 is about 22583.0627240859. The cubic root of 509994722 is about 798.9542178954.

The spelling of 509994722 in words is "five hundred nine million, nine hundred ninety-four thousand, seven hundred twenty-two".