509879450 has 48 divisors (see below), whose sum is σ = 994724280. Its totient is φ = 194181120.

The previous prime is 509879449. The next prime is 509879467. The reversal of 509879450 is 54978905.

It can be written as a sum of positive squares in 12 ways, for example, as 1692601 + 508186849 = 1301^2 + 22543^2 .

It is a junction number, because it is equal to n+sod(n) for n = 509879395 and 509879404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103442 + ... + 108258.

Almost surely, 2^509879450 is an apocalyptic number.

509879450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

509879450 is a deficient number, since it is larger than the sum of its proper divisors (484844830).

509879450 is a wasteful number, since it uses less digits than its factorization.

509879450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4931 (or 4926 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 509879450 is about 22580.5104016716. The cubic root of 509879450 is about 798.8940185860.

It can be divided in two parts, 5098 and 79450, that added together give a palindrome (84548).

The spelling of 509879450 in words is "five hundred nine million, eight hundred seventy-nine thousand, four hundred fifty".