244323421 has 4 divisors (see below), whose sum is σ = 244757952. Its totient is φ = 243888892.

The previous prime is 244323419. The next prime is 244323467. The reversal of 244323421 is 124323442.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 124323442 = 2 ⋅62161721.

It is a cyclic number.

It is not a de Polignac number, because 244323421 - 2¹ = 244323419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244321421) 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, 216421 + ... + 217546.

It is an arithmetic number, because the mean of its divisors is an integer number (61189488).

Almost surely, 2^244323421 is an apocalyptic number.

It is an amenable number.

244323421 is a deficient number, since it is larger than the sum of its proper divisors (434531).

244323421 is an equidigital number, since it uses as much as digits as its factorization.

244323421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434530.

The product of its digits is 4608, while the sum is 25.

The square root of 244323421 is about 15630.8483774874. The cubic root of 244323421 is about 625.1559470056.

Adding to 244323421 its reverse (124323442), we get a palindrome (368646863).

The spelling of 244323421 in words is "two hundred forty-four million, three hundred twenty-three thousand, four hundred twenty-one".