755744729 has 2 divisors, whose sum is σ = 755744730. Its totient is φ = 755744728.

The previous prime is 755744719. The next prime is 755744761. The reversal of 755744729 is 927447557.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 724686400 + 31058329 = 26920^2 + 5573^2 .

It is a cyclic number.

It is not a de Polignac number, because 755744729 - 2⁴ = 755744713 is a prime.

It is a super-2 number, since 2×755744729² = 1142300190822566882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (755744719) 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, 377872364 + 377872365.

It is an arithmetic number, because the mean of its divisors is an integer number (377872365).

Almost surely, 2^755744729 is an apocalyptic number.

It is an amenable number.

755744729 is a deficient number, since it is larger than the sum of its proper divisors (1).

755744729 is an equidigital number, since it uses as much as digits as its factorization.

755744729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2469600, while the sum is 50.

The square root of 755744729 is about 27490.8117195546. The cubic root of 755744729 is about 910.8741465408.

The spelling of 755744729 in words is "seven hundred fifty-five million, seven hundred forty-four thousand, seven hundred twenty-nine".