813103989 has 8 divisors (see below), whose sum is σ = 1084302912. Its totient is φ = 541987200.

The previous prime is 813103961. The next prime is 813104009. The reversal of 813103989 is 989301318.

It is a happy number.

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

It is not a de Polignac number, because 813103989 - 2⁹ = 813103477 is a prime.

It is a super-2 number, since 2×813103989² = 1322276193855424242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 813103989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813103589) 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, 8389 + ... + 41189.

It is an arithmetic number, because the mean of its divisors is an integer number (135537864).

Almost surely, 2^813103989 is an apocalyptic number.

It is an amenable number.

813103989 is a deficient number, since it is larger than the sum of its proper divisors (271198923).

813103989 is a wasteful number, since it uses less digits than its factorization.

813103989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41067.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 813103989 is about 28514.9783271880. The cubic root of 813103989 is about 933.3589520037.

The spelling of 813103989 in words is "eight hundred thirteen million, one hundred three thousand, nine hundred eighty-nine".