811297893 has 8 divisors (see below), whose sum is σ = 1236263488. Its totient is φ = 463598784.

The previous prime is 811297843. The next prime is 811297897. The reversal of 811297893 is 398792118.

811297893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 811297893 - 2⁶ = 811297829 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 (811297897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19316596 + ... + 19316637.

It is an arithmetic number, because the mean of its divisors is an integer number (154532936).

Almost surely, 2^811297893 is an apocalyptic number.

It is an amenable number.

811297893 is a deficient number, since it is larger than the sum of its proper divisors (424965595).

811297893 is a wasteful number, since it uses less digits than its factorization.

811297893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38633243.

The product of its digits is 217728, while the sum is 48.

The square root of 811297893 is about 28483.2914706148. The cubic root of 811297893 is about 932.6673694697.

The spelling of 811297893 in words is "eight hundred eleven million, two hundred ninety-seven thousand, eight hundred ninety-three".