729895639493 has 4 divisors (see below), whose sum is σ = 729898067820. Its totient is φ = 729893211168.

The previous prime is 729895639439. The next prime is 729895639531. The reversal of 729895639493 is 394936598927.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 356381538529 + 373514100964 = 596977^2 + 611158^2 .

It is a cyclic number.

It is not a de Polignac number, because 729895639493 - 2²⁸ = 729627204037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 729895639493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729895630493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687008 + ... + 1389881.

It is an arithmetic number, because the mean of its divisors is an integer number (182474516955).

Almost surely, 2^729895639493 is an apocalyptic number.

It is an amenable number.

729895639493 is a deficient number, since it is larger than the sum of its proper divisors (2428327).

729895639493 is a wasteful number, since it uses less digits than its factorization.

729895639493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428326.

The product of its digits is 793618560, while the sum is 74.

The spelling of 729895639493 in words is "seven hundred twenty-nine billion, eight hundred ninety-five million, six hundred thirty-nine thousand, four hundred ninety-three".