729391289631 has 8 divisors (see below), whose sum is σ = 975840907440. Its totient is φ = 484601265792.

The previous prime is 729391289621. The next prime is 729391289647. The reversal of 729391289631 is 136982193927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 729391289631 - 2²¹ = 729389192479 is a prime.

It is a super-2 number, since 2×729391289631² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729391289611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414897466 + ... + 414899223.

It is an arithmetic number, because the mean of its divisors is an integer number (121980113430).

Almost surely, 2^729391289631 is an apocalyptic number.

729391289631 is a deficient number, since it is larger than the sum of its proper divisors (246449617809).

729391289631 is a wasteful number, since it uses less digits than its factorization.

729391289631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829796985.

The product of its digits is 8817984, while the sum is 60.

The spelling of 729391289631 in words is "seven hundred twenty-nine billion, three hundred ninety-one million, two hundred eighty-nine thousand, six hundred thirty-one".