8869840 has 80 divisors (see below), whose sum is σ = 24141312. Its totient is φ = 2967552.

The previous prime is 8869837. The next prime is 8869843. The reversal of 8869840 is 489688.

8869840 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8869837) and next prime (8869843).

It is a tau number, because it is divible by the number of its divisors (80).

8869840 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8869843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26152 + ... + 26488.

Almost surely, 2^8869840 is an apocalyptic number.

8869840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8869840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12070656).

8869840 is an abundant number, since it is smaller than the sum of its proper divisors (15271472).

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

8869840 is a wasteful number, since it uses less digits than its factorization.

8869840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 8869840 is about 2978.2276608748. The cubic root of 8869840 is about 207.0007545851. Note that the first 3 decimals are identical.

The spelling of 8869840 in words is "eight million, eight hundred sixty-nine thousand, eight hundred forty".