897929 has 4 divisors (see below), whose sum is σ = 907284. Its totient is φ = 888576.

The previous prime is 897907. The next prime is 897931. The reversal of 897929 is 929798.

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

It can be written as a sum of positive squares in 2 ways, for example, as 200704 + 697225 = 448^2 + 835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 897929.

It is not an unprimeable number, because it can be changed into a prime (897229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4532 + ... + 4725.

It is an arithmetic number, because the mean of its divisors is an integer number (226821).

2⁸⁹⁷⁹²⁹ is an apocalyptic number.

It is an amenable number.

897929 is a deficient number, since it is larger than the sum of its proper divisors (9355).

897929 is an equidigital number, since it uses as much as digits as its factorization.

897929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9354.

The product of its digits is 81648, while the sum is 44.

The square root of 897929 is about 947.5911565649. The cubic root of 897929 is about 96.4748249720.

The spelling of 897929 in words is "eight hundred ninety-seven thousand, nine hundred twenty-nine".