43961040 has 60 divisors (see below), whose sum is σ = 147638244. Its totient is φ = 11722752.

The previous prime is 43961039. The next prime is 43961059. The reversal of 43961040 is 4016934.

43961040 is a `hidden beast` number, since 4 + 3 + 9 + 610 + 40 = 666.

43961040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 29030544 + 14930496 = 5388^2 + 3864^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a junction number, because it is equal to n+sod(n) for n = 43960995 and 43961013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29809 + ... + 31248.

Almost surely, 2^43961040 is an apocalyptic number.

43961040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43961040 is an abundant number, since it is smaller than the sum of its proper divisors (103677204).

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

43961040 is a wasteful number, since it uses less digits than its factorization.

43961040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61076 (or 61067 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 43961040 is about 6630.3122098435. The cubic root of 43961040 is about 352.9306039970.

Adding to 43961040 its reverse (4016934), we get a palindrome (47977974).

The spelling of 43961040 in words is "forty-three million, nine hundred sixty-one thousand, forty".