997893 has 16 divisors (see below), whose sum is σ = 1592640. Its totient is φ = 613872.

The previous prime is 997891. The next prime is 997897. The reversal of 997893 is 398799.

It is a happy number.

997893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 997893 - 2¹ = 997891 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997891) 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, 1071 + ... + 1772.

It is an arithmetic number, because the mean of its divisors is an integer number (99540).

2⁹⁹⁷⁸⁹³ is an apocalyptic number.

It is an amenable number.

997893 is a deficient number, since it is larger than the sum of its proper divisors (594747).

997893 is a wasteful number, since it uses less digits than its factorization.

997893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865 (or 2859 counting only the distinct ones).

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

The square root of 997893 is about 998.9459444835. The cubic root of 997893 is about 99.9297172816.

The spelling of 997893 in words is "nine hundred ninety-seven thousand, eight hundred ninety-three".