497922779 has 4 divisors (see below), whose sum is σ = 515092560. Its totient is φ = 480753000.

The previous prime is 497922769. The next prime is 497922781. The reversal of 497922779 is 977229794.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497922779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497922739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8584847 + ... + 8584904.

It is an arithmetic number, because the mean of its divisors is an integer number (128773140).

Almost surely, 2^497922779 is an apocalyptic number.

497922779 is a deficient number, since it is larger than the sum of its proper divisors (17169781).

497922779 is a wasteful number, since it uses less digits than its factorization.

497922779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17169780.

The product of its digits is 4000752, while the sum is 56.

The square root of 497922779 is about 22314.1833594689. The cubic root of 497922779 is about 792.5998727738.

The spelling of 497922779 in words is "four hundred ninety-seven million, nine hundred twenty-two thousand, seven hundred seventy-nine".