813140009 has 8 divisors (see below), whose sum is σ = 911036928. Its totient is φ = 719238960.

The previous prime is 813139967. The next prime is 813140059. The reversal of 813140009 is 900041318.

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

It is not a de Polignac number, because 813140009 - 2²⁸ = 544704553 is a prime.

It is a super-2 number, since 2×813140009² = 1322393348473040162, which contains 22 as substring.

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 813140009.

It is not an unprimeable number, because it can be changed into a prime (813140059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 998537 + ... + 999350.

It is an arithmetic number, because the mean of its divisors is an integer number (113879616).

Almost surely, 2^813140009 is an apocalyptic number.

It is an amenable number.

813140009 is a deficient number, since it is larger than the sum of its proper divisors (97896919).

813140009 is a wasteful number, since it uses less digits than its factorization.

813140009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997935.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 813140009 is about 28515.6099180782. The cubic root of 813140009 is about 933.3727342068.

The spelling of 813140009 in words is "eight hundred thirteen million, one hundred forty thousand, nine".