897126539 has 2 divisors, whose sum is σ = 897126540. Its totient is φ = 897126538.

The previous prime is 897126521. The next prime is 897126551. The reversal of 897126539 is 935621798.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897126539 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (897126509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448563269 + 448563270.

It is an arithmetic number, because the mean of its divisors is an integer number (448563270).

Almost surely, 2^897126539 is an apocalyptic number.

897126539 is a deficient number, since it is larger than the sum of its proper divisors (1).

897126539 is an equidigital number, since it uses as much as digits as its factorization.

897126539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 50.

The square root of 897126539 is about 29952.0706963642. The cubic root of 897126539 is about 964.4607720608.

The spelling of 897126539 in words is "eight hundred ninety-seven million, one hundred twenty-six thousand, five hundred thirty-nine".