4234221387 has 12 divisors (see below), whose sum is σ = 6672106584. Its totient is φ = 2566194720.

The previous prime is 4234221377. The next prime is 4234221389. The reversal of 4234221387 is 7831224324.

It is a happy number.

4234221387 is a `hidden beast` number, since 423 + 4 + 221 + 3 + 8 + 7 = 666.

It is not a de Polignac number, because 4234221387 - 2⁶ = 4234221323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4234221389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21384858 + ... + 21385055.

It is an arithmetic number, because the mean of its divisors is an integer number (556008882).

Almost surely, 2^4234221387 is an apocalyptic number.

4234221387 is a deficient number, since it is larger than the sum of its proper divisors (2437885197).

4234221387 is a wasteful number, since it uses less digits than its factorization.

4234221387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42769930 (or 42769927 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 4234221387 is about 65070.8950837469. The cubic root of 4234221387 is about 1617.7988429757.

The spelling of 4234221387 in words is "four billion, two hundred thirty-four million, two hundred twenty-one thousand, three hundred eighty-seven".