897847 has 2 divisors, whose sum is σ = 897848. Its totient is φ = 897846.

The previous prime is 897829. The next prime is 897877. The reversal of 897847 is 748798.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 897847 - 2¹¹ = 895799 is a prime.

It is a super-2 number, since 2×897847² = 1612258470818, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (897817) 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 as a sum of consecutive naturals, namely, 448923 + 448924.

It is an arithmetic number, because the mean of its divisors is an integer number (448924).

2⁸⁹⁷⁸⁴⁷ is an apocalyptic number.

897847 is a deficient number, since it is larger than the sum of its proper divisors (1).

897847 is an equidigital number, since it uses as much as digits as its factorization.

897847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 43.

The square root of 897847 is about 947.5478879719. The cubic root of 897847 is about 96.4718881487.

It can be divided in two parts, 8978 and 47, that added together give a square (9025 = 95²).

The spelling of 897847 in words is "eight hundred ninety-seven thousand, eight hundred forty-seven".