744219643 has 2 divisors, whose sum is σ = 744219644. Its totient is φ = 744219642.

The previous prime is 744219631. The next prime is 744219647. The reversal of 744219643 is 346912447.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 744219643 - 2²⁵ = 710665211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 744219596 and 744219605.

It is not a weakly prime, because it can be changed into another prime (744219647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372109821 + 372109822.

It is an arithmetic number, because the mean of its divisors is an integer number (372109822).

Almost surely, 2^744219643 is an apocalyptic number.

744219643 is a deficient number, since it is larger than the sum of its proper divisors (1).

744219643 is an equidigital number, since it uses as much as digits as its factorization.

744219643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 744219643 is about 27280.3893483946. The cubic root of 744219643 is about 906.2201394965.

The spelling of 744219643 in words is "seven hundred forty-four million, two hundred nineteen thousand, six hundred forty-three".