897949 has 4 divisors (see below), whose sum is σ = 967036. Its totient is φ = 828864.

The previous prime is 897947. The next prime is 897971. The reversal of 897949 is 949798.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 949798 = 2 ⋅474899.

It can be written as a sum of positive squares in 2 ways, for example, as 324900 + 573049 = 570^2 + 757^2 .

It is a cyclic number.

It is not a de Polignac number, because 897949 - 2¹ = 897947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 897899 and 897908.

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, 34524 + ... + 34549.

It is an arithmetic number, because the mean of its divisors is an integer number (241759).

2⁸⁹⁷⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

897949 is a deficient number, since it is larger than the sum of its proper divisors (69087).

897949 is a wasteful number, since it uses less digits than its factorization.

897949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69086.

The product of its digits is 163296, while the sum is 46.

The square root of 897949 is about 947.6017095806. The cubic root of 897949 is about 96.4755412432.

The spelling of 897949 in words is "eight hundred ninety-seven thousand, nine hundred forty-nine".