509672459 has 4 divisors (see below), whose sum is σ = 509785800. Its totient is φ = 509559120.

The previous prime is 509672453. The next prime is 509672467. The reversal of 509672459 is 954276905.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 954276905 = 5 ⋅190855381.

It is a cyclic number.

It is not a de Polignac number, because 509672459 - 2¹² = 509668363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509672453) 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, 49634 + ... + 59015.

It is an arithmetic number, because the mean of its divisors is an integer number (127446450).

Almost surely, 2^509672459 is an apocalyptic number.

509672459 is a deficient number, since it is larger than the sum of its proper divisors (113341).

509672459 is a wasteful number, since it uses less digits than its factorization.

509672459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113340.

The product of its (nonzero) digits is 680400, while the sum is 47.

The square root of 509672459 is about 22575.9265369109. The cubic root of 509672459 is about 798.7858974383.

The spelling of 509672459 in words is "five hundred nine million, six hundred seventy-two thousand, four hundred fifty-nine".