494979769 has 4 divisors (see below), whose sum is σ = 524096244. Its totient is φ = 465863296.

The previous prime is 494979739. The next prime is 494979809. The reversal of 494979769 is 967979494.

It is a happy number.

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 182574144 + 312405625 = 13512^2 + 17675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494979769 is a prime.

It is a super-2 number, since 2×494979769² = 490009943438586722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 494979769.

It is not an unprimeable number, because it can be changed into a prime (494979739) 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, 14558212 + ... + 14558245.

It is an arithmetic number, because the mean of its divisors is an integer number (131024061).

Almost surely, 2^494979769 is an apocalyptic number.

It is an amenable number.

494979769 is a deficient number, since it is larger than the sum of its proper divisors (29116475).

494979769 is a wasteful number, since it uses less digits than its factorization.

494979769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29116474.

The product of its digits is 30862944, while the sum is 64.

The square root of 494979769 is about 22248.1407987274. The cubic root of 494979769 is about 791.0352123301.

The spelling of 494979769 in words is "four hundred ninety-four million, nine hundred seventy-nine thousand, seven hundred sixty-nine".