509349922 has 4 divisors (see below), whose sum is σ = 764024886. Its totient is φ = 254674960.

The previous prime is 509349917. The next prime is 509349923. The reversal of 509349922 is 229943905.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 229943905 = 5 ⋅45988781.

It can be written as a sum of positive squares in only one way, i.e., 279190681 + 230159241 = 16709^2 + 15171^2 .

It is not an unprimeable number, because it can be changed into a prime (509349923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127337479 + ... + 127337482.

Almost surely, 2^509349922 is an apocalyptic number.

509349922 is a deficient number, since it is larger than the sum of its proper divisors (254674964).

509349922 is a wasteful number, since it uses less digits than its factorization.

509349922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254674963.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 509349922 is about 22568.7820229626. The cubic root of 509349922 is about 798.6173628113.

The spelling of 509349922 in words is "five hundred nine million, three hundred forty-nine thousand, nine hundred twenty-two".