43950440 has 32 divisors (see below), whose sum is σ = 104707080. Its totient is φ = 16545792.

The previous prime is 43950419. The next prime is 43950443. The reversal of 43950440 is 4405934.

It can be written as a sum of positive squares in 4 ways, for example, as 40271716 + 3678724 = 6346^2 + 1918^2 .

It is not an unprimeable number, because it can be changed into a prime (43950443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31637 + ... + 32996.

Almost surely, 2^43950440 is an apocalyptic number.

43950440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43950440 is an abundant number, since it is smaller than the sum of its proper divisors (60756640).

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

43950440 is a wasteful number, since it uses less digits than its factorization.

43950440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64661 (or 64657 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 43950440 is about 6629.5128026123. The cubic root of 43950440 is about 352.9022352025.

The spelling of 43950440 in words is "forty-three million, nine hundred fifty thousand, four hundred forty".