509404897 has 8 divisors (see below), whose sum is σ = 535613760. Its totient is φ = 483534480.

The previous prime is 509404873. The next prime is 509404919. The reversal of 509404897 is 798404905.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-509404897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509404817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81522 + ... + 87547.

It is an arithmetic number, because the mean of its divisors is an integer number (66951720).

Almost surely, 2^509404897 is an apocalyptic number.

It is an amenable number.

509404897 is a deficient number, since it is larger than the sum of its proper divisors (26208863).

509404897 is a wasteful number, since it uses less digits than its factorization.

509404897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169223.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 509404897 is about 22569.9999335401. Note that the first 4 decimals coincide. The cubic root of 509404897 is about 798.6460938193.

The spelling of 509404897 in words is "five hundred nine million, four hundred four thousand, eight hundred ninety-seven".