455444421 has 16 divisors (see below), whose sum is σ = 639848640. Its totient is φ = 287366400.

The previous prime is 455444393. The next prime is 455444447. The reversal of 455444421 is 124444554.

It is not a de Polignac number, because 455444421 - 2¹¹ = 455442373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455444461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65131 + ... + 71783.

It is an arithmetic number, because the mean of its divisors is an integer number (39990540).

Almost surely, 2^455444421 is an apocalyptic number.

It is an amenable number.

455444421 is a deficient number, since it is larger than the sum of its proper divisors (184404219).

455444421 is a wasteful number, since it uses less digits than its factorization.

455444421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7876.

The product of its digits is 51200, while the sum is 33.

The square root of 455444421 is about 21341.1438540674. The cubic root of 455444421 is about 769.3875047125.

Adding to 455444421 its reverse (124444554), we get a palindrome (579888975).

The spelling of 455444421 in words is "four hundred fifty-five million, four hundred forty-four thousand, four hundred twenty-one".