853077897 has 18 divisors (see below), whose sum is σ = 1433403738. Its totient is φ = 487472832.

The previous prime is 853077893. The next prime is 853077931. The reversal of 853077897 is 798770358.

It can be written as a sum of positive squares in only one way, i.e., 577152576 + 275925321 = 24024^2 + 16611^2 .

It is not a de Polignac number, because 853077897 - 2² = 853077893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (853077893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 966768 + ... + 967649.

It is an arithmetic number, because the mean of its divisors is an integer number (79633541).

Almost surely, 2^853077897 is an apocalyptic number.

It is an amenable number.

853077897 is a deficient number, since it is larger than the sum of its proper divisors (580325841).

853077897 is a wasteful number, since it uses less digits than its factorization.

853077897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934437 (or 1934427 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 54.

The square root of 853077897 is about 29207.4972738165. The cubic root of 853077897 is about 948.4102301083.

The spelling of 853077897 in words is "eight hundred fifty-three million, seventy-seven thousand, eight hundred ninety-seven".