8897391 has 8 divisors (see below), whose sum is σ = 13181360. Its totient is φ = 5931576.

The previous prime is 8897387. The next prime is 8897401. The reversal of 8897391 is 1937988.

It is not a de Polignac number, because 8897391 - 2² = 8897387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8897311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164740 + ... + 164793.

It is an arithmetic number, because the mean of its divisors is an integer number (1647670).

Almost surely, 2^8897391 is an apocalyptic number.

8897391 is a deficient number, since it is larger than the sum of its proper divisors (4283969).

8897391 is a wasteful number, since it uses less digits than its factorization.

8897391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329542 (or 329536 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 8897391 is about 2982.8494765911. The cubic root of 8897391 is about 207.2148577744.

It can be divided in two parts, 88 and 97391, that added together give a palindrome (97479).

The spelling of 8897391 in words is "eight million, eight hundred ninety-seven thousand, three hundred ninety-one".