897150438 has 128 divisors (see below), whose sum is σ = 2150064000. Its totient is φ = 276756480.

The previous prime is 897150407. The next prime is 897150439. The reversal of 897150438 is 834051798.

It is a junction number, because it is equal to n+sod(n) for n = 897150393 and 897150402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897150439) 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 63 ways as a sum of consecutive naturals, for example, 5714256 + ... + 5714412.

It is an arithmetic number, because the mean of its divisors is an integer number (16797375).

Almost surely, 2^897150438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897150438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1075032000).

897150438 is an abundant number, since it is smaller than the sum of its proper divisors (1252913562).

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

897150438 is a wasteful number, since it uses less digits than its factorization.

897150438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 897150438 is about 29952.4696477603. The cubic root of 897150438 is about 964.4693362348.

The spelling of 897150438 in words is "eight hundred ninety-seven million, one hundred fifty thousand, four hundred thirty-eight".