744734189 has 2 divisors, whose sum is σ = 744734190. Its totient is φ = 744734188.

The previous prime is 744734171. The next prime is 744734191. The reversal of 744734189 is 981437447.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 744362089 + 372100 = 27283^2 + 610^2 .

It is a cyclic number.

It is not a de Polignac number, because 744734189 - 2²⁸ = 476298733 is a prime.

Together with 744734191, 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 (744734149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372367094 + 372367095.

It is an arithmetic number, because the mean of its divisors is an integer number (372367095).

Almost surely, 2^744734189 is an apocalyptic number.

It is an amenable number.

744734189 is a deficient number, since it is larger than the sum of its proper divisors (1).

744734189 is an equidigital number, since it uses as much as digits as its factorization.

744734189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 47.

The square root of 744734189 is about 27289.8184127341. The cubic root of 744734189 is about 906.4289418890.

The spelling of 744734189 in words is "seven hundred forty-four million, seven hundred thirty-four thousand, one hundred eighty-nine".