494979780 has 48 divisors (see below), whose sum is σ = 1446205824. Its totient is φ = 126255360.

The previous prime is 494979739. The next prime is 494979809. The reversal of 494979780 is 87979494.

It is a self number, because there is not a number n which added to its sum of digits gives 494979780.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177961 + ... + 180720.

It is an arithmetic number, because the mean of its divisors is an integer number (30129288).

Almost surely, 2^494979780 is an apocalyptic number.

It is an amenable number.

494979780 is an abundant number, since it is smaller than the sum of its proper divisors (951226044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

494979780 is a wasteful number, since it uses less digits than its factorization.

494979780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358716 (or 358714 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 57.

The square root of 494979780 is about 22248.1410459391. The cubic root of 494979780 is about 791.0352181898.

The spelling of 494979780 in words is "four hundred ninety-four million, nine hundred seventy-nine thousand, seven hundred eighty".