509404895 has 8 divisors (see below), whose sum is σ = 611585520. Its totient is φ = 407324160.

The previous prime is 509404873. The next prime is 509404919. The reversal of 509404895 is 598404905.

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

It is not a de Polignac number, because 509404895 - 2⁸ = 509404639 is a prime.

It is a super-2 number, since 2×509404895² = 518986694099922050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13250 + ... + 34559.

It is an arithmetic number, because the mean of its divisors is an integer number (76448190).

Almost surely, 2^509404895 is an apocalyptic number.

509404895 is a deficient number, since it is larger than the sum of its proper divisors (102180625).

509404895 is a wasteful number, since it uses less digits than its factorization.

509404895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49945.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 509404895 is about 22569.9998892335. Note that the first 3 decimals coincide. The cubic root of 509404895 is about 798.6460927741.

The spelling of 509404895 in words is "five hundred nine million, four hundred four thousand, eight hundred ninety-five".