754444421 has 2 divisors, whose sum is σ = 754444422. Its totient is φ = 754444420.

The previous prime is 754444357. The next prime is 754444433. The reversal of 754444421 is 124444457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429940225 + 324504196 = 20735^2 + 18014^2 .

It is an emirp because it is prime and its reverse (124444457) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 754444421 - 2⁶ = 754444357 is a prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (754404421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 377222210 + 377222211.

It is an arithmetic number, because the mean of its divisors is an integer number (377222211).

Almost surely, 2^754444421 is an apocalyptic number.

It is an amenable number.

754444421 is a deficient number, since it is larger than the sum of its proper divisors (1).

754444421 is an equidigital number, since it uses as much as digits as its factorization.

754444421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71680, while the sum is 35.

The square root of 754444421 is about 27467.1516724978. The cubic root of 754444421 is about 910.3514405559.

Adding to 754444421 its reverse (124444457), we get a palindrome (878888878).

The spelling of 754444421 in words is "seven hundred fifty-four million, four hundred forty-four thousand, four hundred twenty-one".