897118433 has 2 divisors, whose sum is σ = 897118434. Its totient is φ = 897118432.

The previous prime is 897118367. The next prime is 897118463. The reversal of 897118433 is 334811798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 821567569 + 75550864 = 28663^2 + 8692^2 .

It is a cyclic number.

It is not a de Polignac number, because 897118433 - 2¹⁰ = 897117409 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (897118463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448559216 + 448559217.

It is an arithmetic number, because the mean of its divisors is an integer number (448559217).

Almost surely, 2^897118433 is an apocalyptic number.

It is an amenable number.

897118433 is a deficient number, since it is larger than the sum of its proper divisors (1).

897118433 is an equidigital number, since it uses as much as digits as its factorization.

897118433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 897118433 is about 29951.9353798715. The cubic root of 897118433 is about 964.4578672522.

The spelling of 897118433 in words is "eight hundred ninety-seven million, one hundred eighteen thousand, four hundred thirty-three".