744420431 has 2 divisors, whose sum is σ = 744420432. Its totient is φ = 744420430.

The previous prime is 744420407. The next prime is 744420433. The reversal of 744420431 is 134024447.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 744420431 - 2¹⁴ = 744404047 is a prime.

It is a super-2 number, since 2×744420431² = 1108323556180451522, which contains 22 as substring.

Together with 744420433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 744420394 and 744420403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (744420433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372210215 + 372210216.

It is an arithmetic number, because the mean of its divisors is an integer number (372210216).

Almost surely, 2^744420431 is an apocalyptic number.

744420431 is a deficient number, since it is larger than the sum of its proper divisors (1).

744420431 is an equidigital number, since it uses as much as digits as its factorization.

744420431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 744420431 is about 27284.0691796513. The cubic root of 744420431 is about 906.3016305678.

Adding to 744420431 its reverse (134024447), we get a palindrome (878444878).

The spelling of 744420431 in words is "seven hundred forty-four million, four hundred twenty thousand, four hundred thirty-one".