869278463 has 4 divisors (see below), whose sum is σ = 874303368. Its totient is φ = 864253560.

The previous prime is 869278439. The next prime is 869278469. The reversal of 869278463 is 364872968.

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-869278463 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 (869278469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2512193 + ... + 2512538.

It is an arithmetic number, because the mean of its divisors is an integer number (218575842).

Almost surely, 2^869278463 is an apocalyptic number.

869278463 is a deficient number, since it is larger than the sum of its proper divisors (5024905).

869278463 is a wasteful number, since it uses less digits than its factorization.

869278463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5024904.

The product of its digits is 3483648, while the sum is 53.

The square root of 869278463 is about 29483.5286728031. The cubic root of 869278463 is about 954.3762867266.

The spelling of 869278463 in words is "eight hundred sixty-nine million, two hundred seventy-eight thousand, four hundred sixty-three".