780798994 has 16 divisors (see below), whose sum is σ = 1180720728. Its totient is φ = 387234432.

The previous prime is 780798973. The next prime is 780799037. The reversal of 780798994 is 499897087.

It can be written as a sum of positive squares in 4 ways, for example, as 657255769 + 123543225 = 25637^2 + 11115^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210742 + ... + 214414.

Almost surely, 2^780798994 is an apocalyptic number.

780798994 is a deficient number, since it is larger than the sum of its proper divisors (399921734).

780798994 is a wasteful number, since it uses less digits than its factorization.

780798994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4509.

The product of its (nonzero) digits is 9144576, while the sum is 61.

The square root of 780798994 is about 27942.7807134508. The cubic root of 780798994 is about 920.8306117121.

The spelling of 780798994 in words is "seven hundred eighty million, seven hundred ninety-eight thousand, nine hundred ninety-four".