2921389984 has 24 divisors (see below), whose sum is σ = 5756798628. Its totient is φ = 1459345920.

The previous prime is 2921389967. The next prime is 2921390009. The reversal of 2921389984 is 4899831292.

It can be written as a sum of positive squares in 2 ways, for example, as 2875962384 + 45427600 = 53628^2 + 6740^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6507 + ... + 76714.

Almost surely, 2^2921389984 is an apocalyptic number.

It is an amenable number.

2921389984 is a deficient number, since it is larger than the sum of its proper divisors (2835408644).

2921389984 is a wasteful number, since it uses less digits than its factorization.

2921389984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84328 (or 84320 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 55.

The square root of 2921389984 is about 54049.8842181924. The cubic root of 2921389984 is about 1429.5406587006.

The spelling of 2921389984 in words is "two billion, nine hundred twenty-one million, three hundred eighty-nine thousand, nine hundred eighty-four".