897993 has 16 divisors (see below), whose sum is σ = 1350400. Its totient is φ = 589680.

The previous prime is 897983. The next prime is 898013. The reversal of 897993 is 399798.

It is a happy number.

It is not a de Polignac number, because 897993 - 2¹² = 893897 is a prime.

It is a Duffinian number.

It is a Curzon number.

897993 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (897983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1923 + ... + 2343.

It is an arithmetic number, because the mean of its divisors is an integer number (84400).

2⁸⁹⁷⁹⁹³ is an apocalyptic number.

It is an amenable number.

897993 is a deficient number, since it is larger than the sum of its proper divisors (452407).

897993 is a wasteful number, since it uses less digits than its factorization.

897993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 503 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 897993 is about 947.6249258013. The cubic root of 897993 is about 96.4771170025.

The spelling of 897993 in words is "eight hundred ninety-seven thousand, nine hundred ninety-three".