495321917 has 4 divisors (see below), whose sum is σ = 496671936. Its totient is φ = 493971900.

The previous prime is 495321907. The next prime is 495321919. The reversal of 495321917 is 719123594.

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 495321917 - 2⁸ = 495321661 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 (495321919) 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, 674459 + ... + 675192.

It is an arithmetic number, because the mean of its divisors is an integer number (124167984).

Almost surely, 2^495321917 is an apocalyptic number.

It is an amenable number.

495321917 is a deficient number, since it is larger than the sum of its proper divisors (1350019).

495321917 is a wasteful number, since it uses less digits than its factorization.

495321917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350018.

The product of its digits is 68040, while the sum is 41.

The square root of 495321917 is about 22255.8288320161. The cubic root of 495321917 is about 791.2174344432.

The spelling of 495321917 in words is "four hundred ninety-five million, three hundred twenty-one thousand, nine hundred seventeen".