729551349 has 6 divisors (see below), whose sum is σ = 1053796406. Its totient is φ = 486367560.

The previous prime is 729551323. The next prime is 729551353. The reversal of 729551349 is 943155927.

It is a happy number.

729551349 is a `hidden beast` number, since 7 + 2 + 95 + 513 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 697910724 + 31640625 = 26418^2 + 5625^2 .

It is not a de Polignac number, because 729551349 - 2⁸ = 729551093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729551309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40530622 + ... + 40530639.

Almost surely, 2^729551349 is an apocalyptic number.

It is an amenable number.

729551349 is a deficient number, since it is larger than the sum of its proper divisors (324245057).

729551349 is a wasteful number, since it uses less digits than its factorization.

729551349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81061267 (or 81061264 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 729551349 is about 27010.2082368870. The cubic root of 729551349 is about 900.2268354163.

The spelling of 729551349 in words is "seven hundred twenty-nine million, five hundred fifty-one thousand, three hundred forty-nine".