495391 has 8 divisors (see below), whose sum is σ = 544320. Its totient is φ = 448032.

The previous prime is 495389. The next prime is 495401. The reversal of 495391 is 193594.

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

It is not a de Polignac number, because 495391 - 2¹ = 495389 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330 + ... + 1048.

It is an arithmetic number, because the mean of its divisors is an integer number (68040).

2⁴⁹⁵³⁹¹ is an apocalyptic number.

495391 is a deficient number, since it is larger than the sum of its proper divisors (48929).

495391 is a wasteful number, since it uses less digits than its factorization.

495391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785.

The product of its digits is 4860, while the sum is 31.

The square root of 495391 is about 703.8401807229. The cubic root of 495391 is about 79.1254216673.

The spelling of 495391 in words is "four hundred ninety-five thousand, three hundred ninety-one".