897983892 has 36 divisors (see below), whose sum is σ = 2444512980. Its totient is φ = 276302592.

The previous prime is 897983887. The next prime is 897983939. The reversal of 897983892 is 298389798.

It can be written as a sum of positive squares in 2 ways, for example, as 454712976 + 443270916 = 21324^2 + 21054^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 958917 + ... + 959852.

Almost surely, 2^897983892 is an apocalyptic number.

It is an amenable number.

897983892 is an abundant number, since it is smaller than the sum of its proper divisors (1546529088).

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

897983892 is a wasteful number, since it uses less digits than its factorization.

897983892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918792 (or 1918787 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 63.

The square root of 897983892 is about 29966.3793608771. The cubic root of 897983892 is about 964.7679082459.

The spelling of 897983892 in words is "eight hundred ninety-seven million, nine hundred eighty-three thousand, eight hundred ninety-two".