813420973 has 8 divisors (see below), whose sum is σ = 829460736. Its totient is φ = 797538000.

The previous prime is 813420919. The next prime is 813420977. The reversal of 813420973 is 379024318.

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 813420973 - 2²⁵ = 779866541 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 (813420977) 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 7 ways as a sum of consecutive naturals, for example, 28693 + ... + 49498.

It is an arithmetic number, because the mean of its divisors is an integer number (103682592).

Almost surely, 2^813420973 is an apocalyptic number.

It is an amenable number.

813420973 is a deficient number, since it is larger than the sum of its proper divisors (16039763).

813420973 is a wasteful number, since it uses less digits than its factorization.

813420973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78395.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 813420973 is about 28520.5359872496. The cubic root of 813420973 is about 933.4802244854.

The spelling of 813420973 in words is "eight hundred thirteen million, four hundred twenty thousand, nine hundred seventy-three".