897889860 has 144 divisors (see below), whose sum is σ = 3228091776. Its totient is φ = 205224192.

The previous prime is 897889823. The next prime is 897889871. The reversal of 897889860 is 68988798.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20824 + ... + 47216.

It is an arithmetic number, because the mean of its divisors is an integer number (22417304).

Almost surely, 2^897889860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897889860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1614045888).

897889860 is an abundant number, since it is smaller than the sum of its proper divisors (2330201916).

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

897889860 is a wasteful number, since it uses less digits than its factorization.

897889860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26424 (or 26410 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 63.

The square root of 897889860 is about 29964.8103614890. The cubic root of 897889860 is about 964.7342319838.

The spelling of 897889860 in words is "eight hundred ninety-seven million, eight hundred eighty-nine thousand, eight hundred sixty".