867380447 has 4 divisors (see below), whose sum is σ = 868359216. Its totient is φ = 866401680.

The previous prime is 867380399. The next prime is 867380453. The reversal of 867380447 is 744083768.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-867380447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867380497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488054 + ... + 489827.

It is an arithmetic number, because the mean of its divisors is an integer number (217089804).

Almost surely, 2^867380447 is an apocalyptic number.

867380447 is a deficient number, since it is larger than the sum of its proper divisors (978769).

867380447 is an equidigital number, since it uses as much as digits as its factorization.

867380447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978768.

The product of its (nonzero) digits is 903168, while the sum is 47.

The square root of 867380447 is about 29451.3233488752. The cubic root of 867380447 is about 953.6811732822.

The spelling of 867380447 in words is "eight hundred sixty-seven million, three hundred eighty thousand, four hundred forty-seven".