4222640987 has 2 divisors, whose sum is σ = 4222640988. Its totient is φ = 4222640986.

The previous prime is 4222640977. The next prime is 4222641011. The reversal of 4222640987 is 7890462224.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4222640987 is a prime.

It is not a weakly prime, because it can be changed into another prime (4222640927) 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 as a sum of consecutive naturals, namely, 2111320493 + 2111320494.

It is an arithmetic number, because the mean of its divisors is an integer number (2111320494).

Almost surely, 2^4222640987 is an apocalyptic number.

4222640987 is a deficient number, since it is larger than the sum of its proper divisors (1).

4222640987 is an equidigital number, since it uses as much as digits as its factorization.

4222640987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 4222640987 is about 64981.8512124732. The cubic root of 4222640987 is about 1616.3226279827.

The spelling of 4222640987 in words is "four billion, two hundred twenty-two million, six hundred forty thousand, nine hundred eighty-seven".