43908961 has 2 divisors, whose sum is σ = 43908962. Its totient is φ = 43908960.

The previous prime is 43908947. The next prime is 43908967. The reversal of 43908961 is 16980934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33281361 + 10627600 = 5769^2 + 3260^2 .

It is a cyclic number.

It is not a de Polignac number, because 43908961 - 2¹⁵ = 43876193 is a prime.

It is not a weakly prime, because it can be changed into another prime (43908967) 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 as a sum of consecutive naturals, namely, 21954480 + 21954481.

It is an arithmetic number, because the mean of its divisors is an integer number (21954481).

Almost surely, 2^43908961 is an apocalyptic number.

It is an amenable number.

43908961 is a deficient number, since it is larger than the sum of its proper divisors (1).

43908961 is an equidigital number, since it uses as much as digits as its factorization.

43908961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 43908961 is about 6626.3837045556. The cubic root of 43908961 is about 352.7911810303.

The spelling of 43908961 in words is "forty-three million, nine hundred eight thousand, nine hundred sixty-one".