4402121 has 4 divisors (see below), whose sum is σ = 4408272. Its totient is φ = 4395972.

The previous prime is 4402081. The next prime is 4402157. The reversal of 4402121 is 1212044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4402121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4402096 and 4402105.

It is not an unprimeable number, because it can be changed into a prime (4402421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1835 + ... + 3488.

It is an arithmetic number, because the mean of its divisors is an integer number (1102068).

Almost surely, 2^4402121 is an apocalyptic number.

It is an amenable number.

4402121 is a deficient number, since it is larger than the sum of its proper divisors (6151).

4402121 is an equidigital number, since it uses as much as digits as its factorization.

4402121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6150.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 4402121 is about 2098.1232089656. The cubic root of 4402121 is about 163.8905798968.

Adding to 4402121 its reverse (1212044), we get a palindrome (5614165).

The spelling of 4402121 in words is "four million, four hundred two thousand, one hundred twenty-one".