897857469 has 12 divisors (see below), whose sum is σ = 1299688416. Its totient is φ = 597287112.

The previous prime is 897857453. The next prime is 897857491. The reversal of 897857469 is 964758798.

897857469 is a `hidden beast` number, since 8 + 97 + 85 + 7 + 469 = 666.

It is not a de Polignac number, because 897857469 - 2⁴ = 897857453 is a prime.

It is a super-2 number, since 2×897857469² = 1612296069278171922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897857449) 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 11 ways as a sum of consecutive naturals, for example, 102609 + ... + 111014.

It is an arithmetic number, because the mean of its divisors is an integer number (108307368).

Almost surely, 2^897857469 is an apocalyptic number.

It is an amenable number.

897857469 is a deficient number, since it is larger than the sum of its proper divisors (401830947).

897857469 is a wasteful number, since it uses less digits than its factorization.

897857469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214096 (or 214093 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 63.

The square root of 897857469 is about 29964.2698726333. The cubic root of 897857469 is about 964.7226310501.

The spelling of 897857469 in words is "eight hundred ninety-seven million, eight hundred fifty-seven thousand, four hundred sixty-nine".