4987788221 has 16 divisors (see below), whose sum is σ = 5443995648. Its totient is φ = 4542350400.

The previous prime is 4987788199. The next prime is 4987788227. The reversal of 4987788221 is 1228877894.

It is a cyclic number.

It is not a de Polignac number, because 4987788221 - 2¹⁰ = 4987787197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4987788227) 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 15 ways as a sum of consecutive naturals, for example, 290486 + ... + 307176.

It is an arithmetic number, because the mean of its divisors is an integer number (340249728).

Almost surely, 2^4987788221 is an apocalyptic number.

It is an amenable number.

4987788221 is a deficient number, since it is larger than the sum of its proper divisors (456207427).

4987788221 is a wasteful number, since it uses less digits than its factorization.

4987788221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17012.

The product of its digits is 3612672, while the sum is 56.

The square root of 4987788221 is about 70624.2750122081. The cubic root of 4987788221 is about 1708.5826885592.

The spelling of 4987788221 in words is "four billion, nine hundred eighty-seven million, seven hundred eighty-eight thousand, two hundred twenty-one".