897308988 has 12 divisors (see below), whose sum is σ = 2093721000. Its totient is φ = 299102992.

The previous prime is 897308927. The next prime is 897308999. The reversal of 897308988 is 889803798.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37387863 + ... + 37387886.

It is an arithmetic number, because the mean of its divisors is an integer number (174476750).

Almost surely, 2^897308988 is an apocalyptic number.

It is an amenable number.

897308988 is an abundant number, since it is smaller than the sum of its proper divisors (1196412012).

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

897308988 is a wasteful number, since it uses less digits than its factorization.

897308988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74775756 (or 74775754 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 60.

The square root of 897308988 is about 29955.1162241110. The cubic root of 897308988 is about 964.5261485595.

The spelling of 897308988 in words is "eight hundred ninety-seven million, three hundred eight thousand, nine hundred eighty-eight".