897943 has 4 divisors (see below), whose sum is σ = 937008. Its totient is φ = 858880.

The previous prime is 897931. The next prime is 897947. The reversal of 897943 is 349798.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 897896 and 897905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19498 + ... + 19543.

It is an arithmetic number, because the mean of its divisors is an integer number (234252).

2⁸⁹⁷⁹⁴³ is an apocalyptic number.

897943 is a deficient number, since it is larger than the sum of its proper divisors (39065).

897943 is a wasteful number, since it uses less digits than its factorization.

897943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39064.

The product of its digits is 54432, while the sum is 40.

The square root of 897943 is about 947.5985436882. The cubic root of 897943 is about 96.4753263630.

The spelling of 897943 in words is "eight hundred ninety-seven thousand, nine hundred forty-three".