43994880 has 288 divisors, whose sum is σ = 166790400. Its totient is φ = 10948608.

The previous prime is 43994879. The next prime is 43994911. The reversal of 43994880 is 8849934.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (288).

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 31 ways as a sum of consecutive naturals, for example, 656607 + ... + 656673.

Almost surely, 2^43994880 is an apocalyptic number.

43994880 is a gapful number since it is divisible by the number (40) 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 43994880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83395200).

43994880 is an abundant number, since it is smaller than the sum of its proper divisors (122795520).

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

43994880 is a wasteful number, since it uses less digits than its factorization.

43994880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 43994880 is about 6632.8636349619. The cubic root of 43994880 is about 353.0211395291.

The spelling of 43994880 in words is "forty-three million, nine hundred ninety-four thousand, eight hundred eighty".