8840397 has 4 divisors (see below), whose sum is σ = 11787200. Its totient is φ = 5893596.

The previous prime is 8840393. The next prime is 8840401. The reversal of 8840397 is 7930488.

8840397 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (8840393) and next prime (8840401).

It is not a de Polignac number, because 8840397 - 2² = 8840393 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 (8840393) 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, 1473397 + ... + 1473402.

It is an arithmetic number, because the mean of its divisors is an integer number (2946800).

Almost surely, 2^8840397 is an apocalyptic number.

It is an amenable number.

8840397 is a deficient number, since it is larger than the sum of its proper divisors (2946803).

8840397 is a wasteful number, since it uses less digits than its factorization.

8840397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946802.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 8840397 is about 2973.2805114890. The cubic root of 8840397 is about 206.7714577247.

Subtracting from 8840397 its reverse (7930488), we obtain a palindrome (909909).

The spelling of 8840397 in words is "eight million, eight hundred forty thousand, three hundred ninety-seven".