43554940 has 96 divisors (see below), whose sum is σ = 109255104. Its totient is φ = 14376960.

The previous prime is 43554919. The next prime is 43554943. The reversal of 43554940 is 4945534.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 43554896 and 43554905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43554943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277342 + ... + 277498.

It is an arithmetic number, because the mean of its divisors is an integer number (1138074).

Almost surely, 2^43554940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43554940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54627552).

43554940 is an abundant number, since it is smaller than the sum of its proper divisors (65700164).

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

43554940 is a wasteful number, since it uses less digits than its factorization.

43554940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 43554940 is about 6599.6166555339. The cubic root of 43554940 is about 351.8404816982.

The spelling of 43554940 in words is "forty-three million, five hundred fifty-four thousand, nine hundred forty".