897391 has 8 divisors (see below), whose sum is σ = 1021824. Its totient is φ = 780120.

The previous prime is 897373. The next prime is 897401. The reversal of 897391 is 193798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 897391 - 2⁵ = 897359 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 897391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897301) 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 7 ways as a sum of consecutive naturals, for example, 1521 + ... + 2026.

It is an arithmetic number, because the mean of its divisors is an integer number (127728).

2⁸⁹⁷³⁹¹ is an apocalyptic number.

897391 is a deficient number, since it is larger than the sum of its proper divisors (124433).

897391 is a wasteful number, since it uses less digits than its factorization.

897391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581.

The product of its digits is 13608, while the sum is 37.

The square root of 897391 is about 947.3072363283. The cubic root of 897391 is about 96.4555532830.

The spelling of 897391 in words is "eight hundred ninety-seven thousand, three hundred ninety-one".