897253440 has 56 divisors (see below), whose sum is σ = 2848782720. Its totient is φ = 239267328.

The previous prime is 897253403. The next prime is 897253451. The reversal of 897253440 is 44352798.

It is a junction number, because it is equal to n+sod(n) for n = 897253392 and 897253401.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 466360 + ... + 468279.

It is an arithmetic number, because the mean of its divisors is an integer number (50871120).

Almost surely, 2^897253440 is an apocalyptic number.

897253440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

897253440 is an abundant number, since it is smaller than the sum of its proper divisors (1951529280).

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

897253440 is a wasteful number, since it uses less digits than its factorization.

897253440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934659 (or 934649 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 897253440 is about 29954.1890225725. The cubic root of 897253440 is about 964.5062451205.

The spelling of 897253440 in words is "eight hundred ninety-seven million, two hundred fifty-three thousand, four hundred forty".