897799 has 4 divisors (see below), whose sum is σ = 1026064. Its totient is φ = 769536.

The previous prime is 897781. The next prime is 897817. The reversal of 897799 is 997798.

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

It is an interprime number because it is at equal distance from previous prime (897781) and next prime (897817).

It is a cyclic number.

It is not a de Polignac number, because 897799 - 2⁷ = 897671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897709) 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, 64122 + ... + 64135.

It is an arithmetic number, because the mean of its divisors is an integer number (256516).

2⁸⁹⁷⁷⁹⁹ is an apocalyptic number.

897799 is a deficient number, since it is larger than the sum of its proper divisors (128265).

897799 is a wasteful number, since it uses less digits than its factorization.

897799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128264.

The product of its digits is 285768, while the sum is 49.

The square root of 897799 is about 947.5225590982. The cubic root of 897799 is about 96.4701689496.

Subtracting 897799 from its reverse (997798), we obtain a palindrome (99999).

The spelling of 897799 in words is "eight hundred ninety-seven thousand, seven hundred ninety-nine".