729381955 has 16 divisors (see below), whose sum is σ = 900956160. Its totient is φ = 566570592.

The previous prime is 729381943. The next prime is 729381971. The reversal of 729381955 is 559183927.

It is a cyclic number.

It is not a de Polignac number, because 729381955 - 2¹⁷ = 729250883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 729381899 and 729381908.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 17626 + ... + 42064.

It is an arithmetic number, because the mean of its divisors is an integer number (56309760).

Almost surely, 2^729381955 is an apocalyptic number.

729381955 is a deficient number, since it is larger than the sum of its proper divisors (171574205).

729381955 is a wasteful number, since it uses less digits than its factorization.

729381955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24618.

The product of its digits is 680400, while the sum is 49.

The square root of 729381955 is about 27007.0723144883. The cubic root of 729381955 is about 900.1571556839.

The spelling of 729381955 in words is "seven hundred twenty-nine million, three hundred eighty-one thousand, nine hundred fifty-five".