495781909 has 8 divisors (see below), whose sum is σ = 574370240. Its totient is φ = 419134176.

The previous prime is 495781901. The next prime is 495781921. The reversal of 495781909 is 909187594.

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

It is a cyclic number.

It is not a de Polignac number, because 495781909 - 2³ = 495781901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495781901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484599 + ... + 485620.

It is an arithmetic number, because the mean of its divisors is an integer number (71796280).

Almost surely, 2^495781909 is an apocalyptic number.

It is an amenable number.

495781909 is a deficient number, since it is larger than the sum of its proper divisors (78588331).

495781909 is an equidigital number, since it uses as much as digits as its factorization.

495781909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970299.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 495781909 is about 22266.1606254873. The cubic root of 495781909 is about 791.4622860378.

The spelling of 495781909 in words is "four hundred ninety-five million, seven hundred eighty-one thousand, nine hundred nine".