744828869 has 2 divisors, whose sum is σ = 744828870. Its totient is φ = 744828868.

The previous prime is 744828863. The next prime is 744828913. The reversal of 744828869 is 968828447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 514699969 + 230128900 = 22687^2 + 15170^2 .

It is a cyclic number.

It is not a de Polignac number, because 744828869 - 2⁴ = 744828853 is a prime.

It is a super-2 number, since 2×744828869² = 1109540088191638322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (744828863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372414434 + 372414435.

It is an arithmetic number, because the mean of its divisors is an integer number (372414435).

Almost surely, 2^744828869 is an apocalyptic number.

It is an amenable number.

744828869 is a deficient number, since it is larger than the sum of its proper divisors (1).

744828869 is an equidigital number, since it uses as much as digits as its factorization.

744828869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6193152, while the sum is 56.

The square root of 744828869 is about 27291.5530705015. The cubic root of 744828869 is about 906.4673524865.

The spelling of 744828869 in words is "seven hundred forty-four million, eight hundred twenty-eight thousand, eight hundred sixty-nine".