811059940 has 12 divisors (see below), whose sum is σ = 1703225916. Its totient is φ = 324423968.

The previous prime is 811059929. The next prime is 811059941. The reversal of 811059940 is 49950118.

811059940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 117158976 + 693900964 = 10824^2 + 26342^2 .

It is a super-3 number, since 3×811059940³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 811059940.

It is not an unprimeable number, because it can be changed into a prime (811059941) 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, 20276479 + ... + 20276518.

It is an arithmetic number, because the mean of its divisors is an integer number (141935493).

Almost surely, 2^811059940 is an apocalyptic number.

It is an amenable number.

811059940 is an abundant number, since it is smaller than the sum of its proper divisors (892165976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

811059940 is a wasteful number, since it uses less digits than its factorization.

811059940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40553006 (or 40553004 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 811059940 is about 28479.1141013902. The cubic root of 811059940 is about 932.5761770312.

The spelling of 811059940 in words is "eight hundred eleven million, fifty-nine thousand, nine hundred forty".