897822901 has 2 divisors, whose sum is σ = 897822902. Its totient is φ = 897822900.

The previous prime is 897822889. The next prime is 897822907. The reversal of 897822901 is 109228798.

897822901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 495018001 + 402804900 = 22249^2 + 20070^2 .

It is a cyclic number.

It is not a de Polignac number, because 897822901 - 2¹⁵ = 897790133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (897822907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448911450 + 448911451.

It is an arithmetic number, because the mean of its divisors is an integer number (448911451).

Almost surely, 2^897822901 is an apocalyptic number.

It is an amenable number.

897822901 is a deficient number, since it is larger than the sum of its proper divisors (1).

897822901 is an equidigital number, since it uses as much as digits as its factorization.

897822901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 897822901 is about 29963.6930467524. The cubic root of 897822901 is about 964.7102501095.

It can be divided in two parts, 89 and 7822901, that added together give a triangular number (7822990 = T₃₉₅₅).

The spelling of 897822901 in words is "eight hundred ninety-seven million, eight hundred twenty-two thousand, nine hundred one".