813029009447 has 8 divisors (see below), whose sum is σ = 814178286720. Its totient is φ = 811879866360.

The previous prime is 813029009389. The next prime is 813029009449. The reversal of 813029009447 is 744900920318.

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

It is a cyclic number.

It is not a de Polignac number, because 813029009447 - 2¹⁸ = 813028747303 is a prime.

It is a super-2 number, since 2×813029009447² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813029009449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23958422 + ... + 23992332.

It is an arithmetic number, because the mean of its divisors is an integer number (101772285840).

Almost surely, 2^813029009447 is an apocalyptic number.

813029009447 is a deficient number, since it is larger than the sum of its proper divisors (1149277273).

813029009447 is a wasteful number, since it uses less digits than its factorization.

813029009447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67093.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 813029009447 in words is "eight hundred thirteen billion, twenty-nine million, nine thousand, four hundred forty-seven".