4221144454 has 4 divisors (see below), whose sum is σ = 6331716684. Its totient is φ = 2110572226.

The previous prime is 4221144427. The next prime is 4221144457. The reversal of 4221144454 is 4544411224.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221144457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055286112 + ... + 1055286115.

It is an arithmetic number, because the mean of its divisors is an integer number (1582929171).

Almost surely, 2^4221144454 is an apocalyptic number.

4221144454 is a deficient number, since it is larger than the sum of its proper divisors (2110572230).

4221144454 is a wasteful number, since it uses less digits than its factorization.

4221144454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110572229.

The product of its digits is 20480, while the sum is 31.

The square root of 4221144454 is about 64970.3351846056. The cubic root of 4221144454 is about 1616.1316601365.

Adding to 4221144454 its reverse (4544411224), we get a palindrome (8765555678).

The spelling of 4221144454 in words is "four billion, two hundred twenty-one million, one hundred forty-four thousand, four hundred fifty-four".