495819997 has 4 divisors (see below), whose sum is σ = 498559516. Its totient is φ = 493080480.

The previous prime is 495819937. The next prime is 495820001. The reversal of 495819997 is 799918594.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25190361 + 470629636 = 5019^2 + 21694^2 .

It is a cyclic number.

It is not a de Polignac number, because 495819997 - 2¹⁹ = 495295709 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 (495819937) 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, 1369488 + ... + 1369849.

It is an arithmetic number, because the mean of its divisors is an integer number (124639879).

Almost surely, 2^495819997 is an apocalyptic number.

It is an amenable number.

495819997 is a deficient number, since it is larger than the sum of its proper divisors (2739519).

495819997 is a wasteful number, since it uses less digits than its factorization.

495819997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739518.

The product of its digits is 7348320, while the sum is 61.

The square root of 495819997 is about 22267.0158979599. The cubic root of 495819997 is about 791.4825533119.

The spelling of 495819997 in words is "four hundred ninety-five million, eight hundred nineteen thousand, nine hundred ninety-seven".