495817489 has 4 divisors (see below), whose sum is σ = 498786624. Its totient is φ = 492848356.

The previous prime is 495817459. The next prime is 495817541. The reversal of 495817489 is 984718594.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 495817489 - 2⁵ = 495817457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (495817459) 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, 1484317 + ... + 1484650.

It is an arithmetic number, because the mean of its divisors is an integer number (124696656).

Almost surely, 2^495817489 is an apocalyptic number.

It is an amenable number.

495817489 is a deficient number, since it is larger than the sum of its proper divisors (2969135).

495817489 is a wasteful number, since it uses less digits than its factorization.

495817489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969134.

The product of its digits is 2903040, while the sum is 55.

The square root of 495817489 is about 22266.9595814067. The cubic root of 495817489 is about 791.4812187943.

The spelling of 495817489 in words is "four hundred ninety-five million, eight hundred seventeen thousand, four hundred eighty-nine".