4221443402 has 12 divisors (see below), whose sum is σ = 6960148818. Its totient is φ = 1918837800.

The previous prime is 4221443399. The next prime is 4221443407. The reversal of 4221443402 is 2043441224.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2705976361 + 1515467041 = 52019^2 + 38929^2 .

It is not an unprimeable number, because it can be changed into a prime (4221443407) 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 5 ways as a sum of consecutive naturals, for example, 8721749 + ... + 8722232.

Almost surely, 2^4221443402 is an apocalyptic number.

4221443402 is a deficient number, since it is larger than the sum of its proper divisors (2738705416).

4221443402 is a wasteful number, since it uses less digits than its factorization.

4221443402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17444005 (or 17443994 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 4221443402 is about 64972.6357938479. The cubic root of 4221443402 is about 1616.1698115532.

Adding to 4221443402 its reverse (2043441224), we get a palindrome (6264884626).

The spelling of 4221443402 in words is "four billion, two hundred twenty-one million, four hundred forty-three thousand, four hundred two".