780459804 has 72 divisors (see below), whose sum is σ = 2031469440. Its totient is φ = 252497952.

The previous prime is 780459781. The next prime is 780459839. The reversal of 780459804 is 408954087.

It is a self number, because there is not a number n which added to its sum of digits gives 780459804.

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, 257007 + ... + 260025.

Almost surely, 2^780459804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 780459804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1015734720).

780459804 is an abundant number, since it is smaller than the sum of its proper divisors (1251009636).

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

780459804 is a wasteful number, since it uses less digits than its factorization.

780459804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239 (or 3234 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 780459804 is about 27936.7106868364. The cubic root of 780459804 is about 920.6972518349.

The spelling of 780459804 in words is "seven hundred eighty million, four hundred fifty-nine thousand, eight hundred four".