897917449 has 24 divisors (see below), whose sum is σ = 1094978304. Its totient is φ = 729144000.

The previous prime is 897917431. The next prime is 897917453. The reversal of 897917449 is 944719798.

It is not a de Polignac number, because 897917449 - 2¹⁷ = 897786377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 897917393 and 897917402.

It is not an unprimeable number, because it can be changed into a prime (897917249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49839 + ... + 65419.

It is an arithmetic number, because the mean of its divisors is an integer number (45624096).

Almost surely, 2^897917449 is an apocalyptic number.

It is an amenable number.

897917449 is a deficient number, since it is larger than the sum of its proper divisors (197060855).

897917449 is a wasteful number, since it uses less digits than its factorization.

897917449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15649 (or 15636 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 58.

The square root of 897917449 is about 29965.2707146123. The cubic root of 897917449 is about 964.7441128468.

The spelling of 897917449 in words is "eight hundred ninety-seven million, nine hundred seventeen thousand, four hundred forty-nine".