43968375 has 144 divisors (see below), whose sum is σ = 97100640. Its totient is φ = 19008000.

The previous prime is 43968371. The next prime is 43968377. The reversal of 43968375 is 57386934.

It is not a de Polignac number, because 43968375 - 2² = 43968371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 43968375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43968371) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2314116 + ... + 2314134.

It is an arithmetic number, because the mean of its divisors is an integer number (674310).

Almost surely, 2^43968375 is an apocalyptic number.

43968375 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

43968375 is an abundant number, since it is smaller than the sum of its proper divisors (53132265).

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

43968375 is a wasteful number, since it uses less digits than its factorization.

43968375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 55 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 43968375 is about 6630.8653281453. The cubic root of 43968375 is about 352.9502319980.

The spelling of 43968375 in words is "forty-three million, nine hundred sixty-eight thousand, three hundred seventy-five".