43878673 has 2 divisors, whose sum is σ = 43878674. Its totient is φ = 43878672.

The previous prime is 43878661. The next prime is 43878689. The reversal of 43878673 is 37687834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41770369 + 2108304 = 6463^2 + 1452^2 .

It is a cyclic number.

It is not a de Polignac number, because 43878673 - 2¹⁷ = 43747601 is a prime.

It is not a weakly prime, because it can be changed into another prime (43878613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21939336 + 21939337.

It is an arithmetic number, because the mean of its divisors is an integer number (21939337).

Almost surely, 2^43878673 is an apocalyptic number.

It is an amenable number.

43878673 is a deficient number, since it is larger than the sum of its proper divisors (1).

43878673 is an equidigital number, since it uses as much as digits as its factorization.

43878673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 46.

The square root of 43878673 is about 6624.0979008466. The cubic root of 43878673 is about 352.7100449944.

It can be divided in two parts, 43878 and 673, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 43878673 in words is "forty-three million, eight hundred seventy-eight thousand, six hundred seventy-three".