509009932447 has 4 divisors (see below), whose sum is σ = 509179662000. Its totient is φ = 508840202896.

The previous prime is 509009932433. The next prime is 509009932463. The reversal of 509009932447 is 744239900905.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 509009932447 - 2¹¹ = 509009930399 is a prime.

It is a super-2 number, since 2×509009932447² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 509009932394 and 509009932403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509009932477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84860278 + ... + 84866275.

It is an arithmetic number, because the mean of its divisors is an integer number (127294915500).

Almost surely, 2^509009932447 is an apocalyptic number.

509009932447 is a deficient number, since it is larger than the sum of its proper divisors (169729553).

509009932447 is a wasteful number, since it uses less digits than its factorization.

509009932447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169729552.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 509009932447 in words is "five hundred nine billion, nine million, nine hundred thirty-two thousand, four hundred forty-seven".