729149455 has 4 divisors (see below), whose sum is σ = 874979352. Its totient is φ = 583319560.

The previous prime is 729149429. The next prime is 729149459. The reversal of 729149455 is 554941927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 554941927 = 137 ⋅4050671.

It is not a de Polignac number, because 729149455 - 2⁷ = 729149327 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 (729149459) 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 3 ways as a sum of consecutive naturals, for example, 72914941 + ... + 72914950.

It is an arithmetic number, because the mean of its divisors is an integer number (218744838).

Almost surely, 2^729149455 is an apocalyptic number.

729149455 is a deficient number, since it is larger than the sum of its proper divisors (145829897).

729149455 is a wasteful number, since it uses less digits than its factorization.

729149455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145829896.

The product of its digits is 453600, while the sum is 46.

The square root of 729149455 is about 27002.7675433464. The cubic root of 729149455 is about 900.0614999126.

It can be divided in two parts, 72914 and 9455, that added together give a square (82369 = 287²).

The spelling of 729149455 in words is "seven hundred twenty-nine million, one hundred forty-nine thousand, four hundred fifty-five".