43980775 has 6 divisors (see below), whose sum is σ = 54536192. Its totient is φ = 35184600.

The previous prime is 43980773. The next prime is 43980793. The reversal of 43980775 is 57708934.

It is a happy number.

It is not a de Polignac number, because 43980775 - 2¹ = 43980773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43980773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 879591 + ... + 879640.

Almost surely, 2^43980775 is an apocalyptic number.

43980775 is a deficient number, since it is larger than the sum of its proper divisors (10555417).

43980775 is a wasteful number, since it uses less digits than its factorization.

43980775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759241 (or 1759236 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 43980775 is about 6631.8002834826. The cubic root of 43980775 is about 352.9834086583.

The spelling of 43980775 in words is "forty-three million, nine hundred eighty thousand, seven hundred seventy-five".