897801539 has 2 divisors, whose sum is σ = 897801540. Its totient is φ = 897801538.

The previous prime is 897801521. The next prime is 897801577. The reversal of 897801539 is 935108798.

897801539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 897801539 - 2⁸ = 897801283 is a prime.

It is not a weakly prime, because it can be changed into another prime (897800539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448900769 + 448900770.

It is an arithmetic number, because the mean of its divisors is an integer number (448900770).

Almost surely, 2^897801539 is an apocalyptic number.

897801539 is a deficient number, since it is larger than the sum of its proper divisors (1).

897801539 is an equidigital number, since it uses as much as digits as its factorization.

897801539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 897801539 is about 29963.3365798938. The cubic root of 897801539 is about 964.7025988961.

It can be divided in two parts, 89780 and 1539, that added together give a palindrome (91319).

The spelling of 897801539 in words is "eight hundred ninety-seven million, eight hundred one thousand, five hundred thirty-nine".