897769793 has 4 divisors (see below), whose sum is σ = 897838788. Its totient is φ = 897700800.

The previous prime is 897769759. The next prime is 897769811. The reversal of 897769793 is 397967798.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 397967798 = 2 ⋅198983899.

It can be written as a sum of positive squares in 2 ways, for example, as 772172944 + 125596849 = 27788^2 + 11207^2 .

It is a cyclic number.

It is not a de Polignac number, because 897769793 - 2⁶ = 897769729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (897769723) 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, 8396 + ... + 43197.

It is an arithmetic number, because the mean of its divisors is an integer number (224459697).

Almost surely, 2^897769793 is an apocalyptic number.

It is an amenable number.

897769793 is a deficient number, since it is larger than the sum of its proper divisors (68995).

897769793 is a wasteful number, since it uses less digits than its factorization.

897769793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68994.

The product of its digits is 36006768, while the sum is 65.

The square root of 897769793 is about 29962.8068277990. The cubic root of 897769793 is about 964.6912282281.

The spelling of 897769793 in words is "eight hundred ninety-seven million, seven hundred sixty-nine thousand, seven hundred ninety-three".