2872863447 has 4 divisors (see below), whose sum is σ = 3830484600. Its totient is φ = 1915242296.

The previous prime is 2872863443. The next prime is 2872863457. The reversal of 2872863447 is 7443682782.

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 2872863447 - 2² = 2872863443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2872863447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2872863443) 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, 478810572 + ... + 478810577.

It is an arithmetic number, because the mean of its divisors is an integer number (957621150).

Almost surely, 2^2872863447 is an apocalyptic number.

2872863447 is a deficient number, since it is larger than the sum of its proper divisors (957621153).

2872863447 is an equidigital number, since it uses as much as digits as its factorization.

2872863447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957621152.

The product of its digits is 3612672, while the sum is 51.

The square root of 2872863447 is about 53599.0993114623. The cubic root of 2872863447 is about 1421.5811665466.

The spelling of 2872863447 in words is "two billion, eight hundred seventy-two million, eight hundred sixty-three thousand, four hundred forty-seven".