897145982 has 4 divisors (see below), whose sum is σ = 1345718976. Its totient is φ = 448572990.

The previous prime is 897145967. The next prime is 897145987. The reversal of 897145982 is 289541798.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897145987) by changing a digit.

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 as a sum of consecutive naturals, namely, 224286494 + ... + 224286497.

It is an arithmetic number, because the mean of its divisors is an integer number (336429744).

Almost surely, 2^897145982 is an apocalyptic number.

897145982 is a deficient number, since it is larger than the sum of its proper divisors (448572994).

897145982 is a wasteful number, since it uses less digits than its factorization.

897145982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448572993.

The product of its digits is 1451520, while the sum is 53.

The square root of 897145982 is about 29952.3952631505. The cubic root of 897145982 is about 964.4677394448.

The spelling of 897145982 in words is "eight hundred ninety-seven million, one hundred forty-five thousand, nine hundred eighty-two".