2878697447 has 4 divisors (see below), whose sum is σ = 2883960696. Its totient is φ = 2873434200.

The previous prime is 2878697413. The next prime is 2878697449. The reversal of 2878697447 is 7447968782.

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

It is a cyclic number.

It is not a de Polignac number, because 2878697447 - 2⁸ = 2878697191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2878697447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878697449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2630804 + ... + 2631897.

It is an arithmetic number, because the mean of its divisors is an integer number (720990174).

Almost surely, 2^2878697447 is an apocalyptic number.

2878697447 is a deficient number, since it is larger than the sum of its proper divisors (5263249).

2878697447 is an equidigital number, since it uses as much as digits as its factorization.

2878697447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5263248.

The product of its digits is 37933056, while the sum is 62.

The square root of 2878697447 is about 53653.4942664502. The cubic root of 2878697447 is about 1422.5427967641.

The spelling of 2878697447 in words is "two billion, eight hundred seventy-eight million, six hundred ninety-seven thousand, four hundred forty-seven".