43982461 has 2 divisors, whose sum is σ = 43982462. Its totient is φ = 43982460.

The previous prime is 43982443. The next prime is 43982467. The reversal of 43982461 is 16428934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33419961 + 10562500 = 5781^2 + 3250^2 .

It is a cyclic number.

It is not a de Polignac number, because 43982461 - 2⁵ = 43982429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43982461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43982467) 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, 21991230 + 21991231.

It is an arithmetic number, because the mean of its divisors is an integer number (21991231).

Almost surely, 2^43982461 is an apocalyptic number.

It is an amenable number.

43982461 is a deficient number, since it is larger than the sum of its proper divisors (1).

43982461 is an equidigital number, since it uses as much as digits as its factorization.

43982461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 37.

The square root of 43982461 is about 6631.9273970694. The cubic root of 43982461 is about 352.9879191322.

It can be divided in two parts, 4398 and 2461, that added together give a cube (6859 = 19³).

The spelling of 43982461 in words is "forty-three million, nine hundred eighty-two thousand, four hundred sixty-one".