4453421 has 16 divisors (see below), whose sum is σ = 5376000. Its totient is φ = 3606768.

The previous prime is 4453417. The next prime is 4453433. The reversal of 4453421 is 1243544.

It is not a de Polignac number, because 4453421 - 2² = 4453417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4453441) 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, 22280 + ... + 22478.

It is an arithmetic number, because the mean of its divisors is an integer number (336000).

Almost surely, 2^4453421 is an apocalyptic number.

It is an amenable number.

4453421 is a deficient number, since it is larger than the sum of its proper divisors (922579).

4453421 is a wasteful number, since it uses less digits than its factorization.

4453421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368.

The product of its digits is 1920, while the sum is 23.

The square root of 4453421 is about 2110.3130099585. The cubic root of 4453421 is about 164.5247542993.

Adding to 4453421 its reverse (1243544), we get a palindrome (5696965).

The spelling of 4453421 in words is "four million, four hundred fifty-three thousand, four hundred twenty-one".