8979440 has 40 divisors (see below), whose sum is σ = 21092400. Its totient is φ = 3554816.

The previous prime is 8979433. The next prime is 8979461. The reversal of 8979440 is 449798.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8036 + ... + 9084.

It is an arithmetic number, because the mean of its divisors is an integer number (527310).

Almost surely, 2^8979440 is an apocalyptic number.

8979440 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 8979440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10546200).

8979440 is an abundant number, since it is smaller than the sum of its proper divisors (12112960).

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

8979440 is a wasteful number, since it uses less digits than its factorization.

8979440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169 (or 1163 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 8979440 is about 2996.5713740874. The cubic root of 8979440 is about 207.8498670063.

The spelling of 8979440 in words is "eight million, nine hundred seventy-nine thousand, four hundred forty".