509268947 has 8 divisors (see below), whose sum is σ = 561809520. Its totient is φ = 457768960.

The previous prime is 509268937. The next prime is 509269003. The reversal of 509268947 is 749862905.

It is a happy number.

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

It is not a de Polignac number, because 509268947 - 2⁶ = 509268883 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 509268895 and 509268904.

It is not an unprimeable number, because it can be changed into a prime (509268937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259118 + ... + 261075.

It is an arithmetic number, because the mean of its divisors is an integer number (70226190).

Almost surely, 2^509268947 is an apocalyptic number.

509268947 is a deficient number, since it is larger than the sum of its proper divisors (52540573).

509268947 is a wasteful number, since it uses less digits than its factorization.

509268947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520293.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 509268947 is about 22566.9879913116. The cubic root of 509268947 is about 798.5750399305.

The spelling of 509268947 in words is "five hundred nine million, two hundred sixty-eight thousand, nine hundred forty-seven".