897409266 has 48 divisors (see below), whose sum is σ = 2006265600. Its totient is φ = 267209280.

The previous prime is 897409241. The next prime is 897409267. The reversal of 897409266 is 662904798.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897409267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17160 + ... + 45708.

It is an arithmetic number, because the mean of its divisors is an integer number (41797200).

Almost surely, 2^897409266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897409266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1003132800).

897409266 is an abundant number, since it is smaller than the sum of its proper divisors (1108856334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

897409266 is a wasteful number, since it uses less digits than its factorization.

897409266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28611 (or 28598 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 897409266 is about 29956.7899815718. The cubic root of 897409266 is about 964.5620771533.

The spelling of 897409266 in words is "eight hundred ninety-seven million, four hundred nine thousand, two hundred sixty-six".