804780047 has 2 divisors, whose sum is σ = 804780048. Its totient is φ = 804780046.

The previous prime is 804779981. The next prime is 804780049. The reversal of 804780047 is 740087408.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 804780047 - 2²⁸ = 536344591 is a prime.

Together with 804780049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804780049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402390023 + 402390024.

It is an arithmetic number, because the mean of its divisors is an integer number (402390024).

Almost surely, 2^804780047 is an apocalyptic number.

804780047 is a deficient number, since it is larger than the sum of its proper divisors (1).

804780047 is an equidigital number, since it uses as much as digits as its factorization.

804780047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 804780047 is about 28368.6454911051. The cubic root of 804780047 is about 930.1630141655.

The spelling of 804780047 in words is "eight hundred four million, seven hundred eighty thousand, forty-seven".