495009865 has 24 divisors (see below), whose sum is σ = 697781952. Its totient is φ = 330229440.

The previous prime is 495009833. The next prime is 495009899. The reversal of 495009865 is 568900594.

It is not a de Polignac number, because 495009865 - 2⁵ = 495009833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42750 + ... + 53080.

It is an arithmetic number, because the mean of its divisors is an integer number (29074248).

Almost surely, 2^495009865 is an apocalyptic number.

It is an amenable number.

495009865 is a deficient number, since it is larger than the sum of its proper divisors (202772087).

495009865 is a wasteful number, since it uses less digits than its factorization.

495009865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10417 (or 10380 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 495009865 is about 22248.8171595705. The cubic root of 495009865 is about 791.0512443074.

The spelling of 495009865 in words is "four hundred ninety-five million, nine thousand, eight hundred sixty-five".