1244674421 has 2 divisors, whose sum is σ = 1244674422. Its totient is φ = 1244674420.

The previous prime is 1244674399. The next prime is 1244674423. The reversal of 1244674421 is 1244764421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1181296900 + 63377521 = 34370^2 + 7961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1244674421 is a prime.

Together with 1244674423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1244674423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622337210 + 622337211.

It is an arithmetic number, because the mean of its divisors is an integer number (622337211).

Almost surely, 2^1244674421 is an apocalyptic number.

It is an amenable number.

1244674421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244674421 is an equidigital number, since it uses as much as digits as its factorization.

1244674421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43008, while the sum is 35.

The square root of 1244674421 is about 35279.9436082316. The cubic root of 1244674421 is about 1075.6853523333.

Subtracting 1244674421 from its reverse (1244764421), we obtain a square (90000 = 300²).

The spelling of 1244674421 in words is "one billion, two hundred forty-four million, six hundred seventy-four thousand, four hundred twenty-one".