897322539 has 4 divisors (see below), whose sum is σ = 1196430056. Its totient is φ = 598215024.

The previous prime is 897322537. The next prime is 897322541. The reversal of 897322539 is 935223798.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (897322537) and next prime (897322541).

It is not a de Polignac number, because 897322539 - 2¹ = 897322537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (897322537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149553754 + ... + 149553759.

It is an arithmetic number, because the mean of its divisors is an integer number (299107514).

Almost surely, 2^897322539 is an apocalyptic number.

897322539 is a deficient number, since it is larger than the sum of its proper divisors (299107517).

897322539 is a wasteful number, since it uses less digits than its factorization.

897322539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299107516.

The product of its digits is 816480, while the sum is 48.

The square root of 897322539 is about 29955.3424116634. The cubic root of 897322539 is about 964.5310039023.

The spelling of 897322539 in words is "eight hundred ninety-seven million, three hundred twenty-two thousand, five hundred thirty-nine".