499997790 has 48 divisors (see below), whose sum is σ = 1301148576. Its totient is φ = 133214400.

The previous prime is 499997789. The next prime is 499997809. The reversal of 499997790 is 97799994.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155095 + ... + 158285.

It is an arithmetic number, because the mean of its divisors is an integer number (27107262).

Almost surely, 2^499997790 is an apocalyptic number.

499997790 is an abundant number, since it is smaller than the sum of its proper divisors (801150786).

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

499997790 is a wasteful number, since it uses less digits than its factorization.

499997790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4945 (or 4942 counting only the distinct ones).

The product of its (nonzero) digits is 11573604, while the sum is 63.

The square root of 499997790 is about 22360.6303578410. The cubic root of 499997790 is about 793.6993565969.

The spelling of 499997790 in words is "four hundred ninety-nine million, nine hundred ninety-seven thousand, seven hundred ninety".