2244400421 has 4 divisors (see below), whose sum is σ = 2341983072. Its totient is φ = 2146817772.

The previous prime is 2244400409. The next prime is 2244400481. The reversal of 2244400421 is 1240044422.

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 2244400421 - 2⁶ = 2244400357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 97582627 = 2244400421 / (2 + 2 + 4 + 4 + 4 + 0 + 0 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2244400481) 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, 48791291 + ... + 48791336.

It is an arithmetic number, because the mean of its divisors is an integer number (585495768).

Almost surely, 2^2244400421 is an apocalyptic number.

It is an amenable number.

2244400421 is a deficient number, since it is larger than the sum of its proper divisors (97582651).

2244400421 is an equidigital number, since it uses as much as digits as its factorization.

2244400421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97582650.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 2244400421 is about 47375.1033877500. The cubic root of 2244400421 is about 1309.2827534544.

Adding to 2244400421 its reverse (1240044422), we get a palindrome (3484444843).

The spelling of 2244400421 in words is "two billion, two hundred forty-four million, four hundred thousand, four hundred twenty-one".