2988000821 has 4 divisors (see below), whose sum is σ = 3217847052. Its totient is φ = 2758154592.

The previous prime is 2988000797. The next prime is 2988000833. The reversal of 2988000821 is 1280008892.

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

It can be written as a sum of positive squares in 2 ways, for example, as 230280625 + 2757720196 = 15175^2 + 52514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2988000821 - 2¹⁰ = 2987999797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2988000871) 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, 114923096 + ... + 114923121.

It is an arithmetic number, because the mean of its divisors is an integer number (804461763).

Almost surely, 2^2988000821 is an apocalyptic number.

It is an amenable number.

2988000821 is a deficient number, since it is larger than the sum of its proper divisors (229846231).

2988000821 is a wasteful number, since it uses less digits than its factorization.

2988000821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229846230.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 2988000821 is about 54662.6089845701. The cubic root of 2988000821 is about 1440.3241330853.

The spelling of 2988000821 in words is "two billion, nine hundred eighty-eight million, eight hundred twenty-one", and thus it is an aban number.