497779799 has 4 divisors (see below), whose sum is σ = 543032520. Its totient is φ = 452527080.

The previous prime is 497779787. The next prime is 497779829. The reversal of 497779799 is 997977794.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 497779799 - 2⁸ = 497779543 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 (497779769) 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, 22626344 + ... + 22626365.

It is an arithmetic number, because the mean of its divisors is an integer number (135758130).

Almost surely, 2^497779799 is an apocalyptic number.

497779799 is a deficient number, since it is larger than the sum of its proper divisors (45252721).

497779799 is a wasteful number, since it uses less digits than its factorization.

497779799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45252720.

The product of its digits is 63011844, while the sum is 68.

The square root of 497779799 is about 22310.9793375369. The cubic root of 497779799 is about 792.5239997111.

The spelling of 497779799 in words is "four hundred ninety-seven million, seven hundred seventy-nine thousand, seven hundred ninety-nine".