784452749 has 2 divisors, whose sum is σ = 784452750. Its totient is φ = 784452748.

The previous prime is 784452707. The next prime is 784452751. The reversal of 784452749 is 947254487.

It is a happy number.

784452749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 660130249 + 124322500 = 25693^2 + 11150^2 .

It is a cyclic number.

It is not a de Polignac number, because 784452749 - 2²⁴ = 767675533 is a prime.

It is a super-2 number, since 2×784452749² = 1230732230827314002, which contains 22 as substring.

Together with 784452751, 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 = 784452697 and 784452706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (784452649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392226374 + 392226375.

It is an arithmetic number, because the mean of its divisors is an integer number (392226375).

Almost surely, 2^784452749 is an apocalyptic number.

It is an amenable number.

784452749 is a deficient number, since it is larger than the sum of its proper divisors (1).

784452749 is an equidigital number, since it uses as much as digits as its factorization.

784452749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2257920, while the sum is 50.

The square root of 784452749 is about 28008.0836366932. The cubic root of 784452749 is about 922.2647217400.

The spelling of 784452749 in words is "seven hundred eighty-four million, four hundred fifty-two thousand, seven hundred forty-nine".