897399557 has 8 divisors (see below), whose sum is σ = 910103040. Its totient is φ = 884779840.

The previous prime is 897399527. The next prime is 897399571. The reversal of 897399557 is 755993798.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897399557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 897399557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897399527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794 + ... + 42372.

It is an arithmetic number, because the mean of its divisors is an integer number (113762880).

Almost surely, 2^897399557 is an apocalyptic number.

It is an amenable number.

897399557 is a deficient number, since it is larger than the sum of its proper divisors (12703483).

897399557 is a wasteful number, since it uses less digits than its factorization.

897399557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41883.

The product of its digits is 21432600, while the sum is 62.

The square root of 897399557 is about 29956.6279310606. The cubic root of 897399557 is about 964.5585986338.

The spelling of 897399557 in words is "eight hundred ninety-seven million, three hundred ninety-nine thousand, five hundred fifty-seven".