897868093 has 2 divisors, whose sum is σ = 897868094. Its totient is φ = 897868092.

The previous prime is 897868051. The next prime is 897868109. The reversal of 897868093 is 390868798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 492973209 + 404894884 = 22203^2 + 20122^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897868093 is a prime.

It is a super-2 number, since 2×897868093² = 1612334224854913298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (897868393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448934046 + 448934047.

It is an arithmetic number, because the mean of its divisors is an integer number (448934047).

Almost surely, 2^897868093 is an apocalyptic number.

It is an amenable number.

897868093 is a deficient number, since it is larger than the sum of its proper divisors (1).

897868093 is an equidigital number, since it uses as much as digits as its factorization.

897868093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The square root of 897868093 is about 29964.4471499142. The cubic root of 897868093 is about 964.7264360982.

It can be divided in two parts, 89786 and 8093, that added together give a palindrome (97879).

The spelling of 897868093 in words is "eight hundred ninety-seven million, eight hundred sixty-eight thousand, ninety-three".