897397738 has 8 divisors (see below), whose sum is σ = 1352027232. Its totient is φ = 446721996.

The previous prime is 897397733. The next prime is 897397747. The reversal of 897397738 is 837793798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (897397733) 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 in 3 ways as a sum of consecutive naturals, for example, 987870 + ... + 988777.

It is an arithmetic number, because the mean of its divisors is an integer number (169003404).

Almost surely, 2^897397738 is an apocalyptic number.

897397738 is a deficient number, since it is larger than the sum of its proper divisors (454629494).

897397738 is a wasteful number, since it uses less digits than its factorization.

897397738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976876.

The product of its digits is 16003008, while the sum is 61.

The square root of 897397738 is about 29956.5975704852. The cubic root of 897397738 is about 964.5579469236.

The spelling of 897397738 in words is "eight hundred ninety-seven million, three hundred ninety-seven thousand, seven hundred thirty-eight".