897917450 has 24 divisors (see below), whose sum is σ = 1673380620. Its totient is φ = 358467200.

The previous prime is 897917431. The next prime is 897917453. The reversal of 897917450 is 54719798.

It can be written as a sum of positive squares in 6 ways, for example, as 274266721 + 623650729 = 16561^2 + 24973^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is not an unprimeable number, because it can be changed into a prime (897917453) 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 11 ways as a sum of consecutive naturals, for example, 8816 + ... + 43284.

Almost surely, 2^897917450 is an apocalyptic number.

897917450 is a deficient number, since it is larger than the sum of its proper divisors (775463170).

897917450 is a wasteful number, since it uses less digits than its factorization.

897917450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35002 (or 34997 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 897917450 is about 29965.2707312983. The cubic root of 897917450 is about 964.7441132049.

The spelling of 897917450 in words is "eight hundred ninety-seven million, nine hundred seventeen thousand, four hundred fifty".