509479450 has 24 divisors (see below), whose sum is σ = 949269600. Its totient is φ = 203439600.

The previous prime is 509479441. The next prime is 509479459. The reversal of 509479450 is 54974905.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (509479441) and next prime (509479459).

It is a junction number, because it is equal to n+sod(n) for n = 509479397 and 509479406.

It is not an unprimeable number, because it can be changed into a prime (509479459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21445 + ... + 38455.

It is an arithmetic number, because the mean of its divisors is an integer number (39552900).

Almost surely, 2^509479450 is an apocalyptic number.

509479450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

509479450 is a deficient number, since it is larger than the sum of its proper divisors (439790150).

509479450 is a wasteful number, since it uses less digits than its factorization.

509479450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17622 (or 17617 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 509479450 is about 22571.6514681580. The cubic root of 509479450 is about 798.6850533701.

The spelling of 509479450 in words is "five hundred nine million, four hundred seventy-nine thousand, four hundred fifty".