780994847 has 8 divisors (see below), whose sum is σ = 790819200. Its totient is φ = 771193984.

The previous prime is 780994793. The next prime is 780994871. The reversal of 780994847 is 748499087.

780994847 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 780994847 - 2¹⁴ = 780978463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 780994792 and 780994801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780994147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66578 + ... + 77424.

It is an arithmetic number, because the mean of its divisors is an integer number (98852400).

Almost surely, 2^780994847 is an apocalyptic number.

780994847 is a deficient number, since it is larger than the sum of its proper divisors (9824353).

780994847 is a wasteful number, since it uses less digits than its factorization.

780994847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11745.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The square root of 780994847 is about 27946.2850303936. The cubic root of 780994847 is about 920.9075979625.

The spelling of 780994847 in words is "seven hundred eighty million, nine hundred ninety-four thousand, eight hundred forty-seven".