8799840 has 240 divisors, whose sum is σ = 35858592. Its totient is φ = 1990656.

The previous prime is 8799781. The next prime is 8799851. The reversal of 8799840 is 489978.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 90672 + ... + 90768.

Almost surely, 2^8799840 is an apocalyptic number.

8799840 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 8799840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17929296).

8799840 is an abundant number, since it is smaller than the sum of its proper divisors (27058752).

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

8799840 is a wasteful number, since it uses less digits than its factorization.

8799840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 8799840 is about 2966.4524267212. The cubic root of 8799840 is about 206.4547718351.

The spelling of 8799840 in words is "eight million, seven hundred ninety-nine thousand, eight hundred forty".