244421421 has 4 divisors (see below), whose sum is σ = 325895232. Its totient is φ = 162947612.

The previous prime is 244421413. The next prime is 244421467. The reversal of 244421421 is 124124442.

244421421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 244421421 - 2³ = 244421413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 244421391 and 244421400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244421321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40736901 + ... + 40736906.

It is an arithmetic number, because the mean of its divisors is an integer number (81473808).

Almost surely, 2^244421421 is an apocalyptic number.

It is an amenable number.

244421421 is a deficient number, since it is larger than the sum of its proper divisors (81473811).

244421421 is an equidigital number, since it uses as much as digits as its factorization.

244421421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81473810.

The product of its digits is 2048, while the sum is 24.

The square root of 244421421 is about 15633.9828898461. The cubic root of 244421421 is about 625.2395207826.

Adding to 244421421 its reverse (124124442), we get a palindrome (368545863).

The spelling of 244421421 in words is "two hundred forty-four million, four hundred twenty-one thousand, four hundred twenty-one".