897849 has 6 divisors (see below), whose sum is σ = 1296906. Its totient is φ = 598560.

The previous prime is 897847. The next prime is 897877. The reversal of 897849 is 948798.

It can be written as a sum of positive squares in only one way, i.e., 589824 + 308025 = 768^2 + 555^2 .

It is not a de Polignac number, because 897849 - 2¹ = 897847 is a prime.

It is a super-2 number, since 2×897849² = 1612265653602, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (897847) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49872 + ... + 49889.

It is an arithmetic number, because the mean of its divisors is an integer number (216151).

2⁸⁹⁷⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

897849 is a deficient number, since it is larger than the sum of its proper divisors (399057).

897849 is a wasteful number, since it uses less digits than its factorization.

897849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99767 (or 99764 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 897849 is about 947.5489433269. The cubic root of 897849 is about 96.4719597806.

The spelling of 897849 in words is "eight hundred ninety-seven thousand, eight hundred forty-nine".