43972349 has 2 divisors, whose sum is σ = 43972350. Its totient is φ = 43972348.

The previous prime is 43972339. The next prime is 43972363. The reversal of 43972349 is 94327934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30415225 + 13557124 = 5515^2 + 3682^2 .

It is a cyclic number.

It is not a de Polignac number, because 43972349 - 2⁴ = 43972333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43972309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21986174 + 21986175.

It is an arithmetic number, because the mean of its divisors is an integer number (21986175).

Almost surely, 2^43972349 is an apocalyptic number.

It is an amenable number.

43972349 is a deficient number, since it is larger than the sum of its proper divisors (1).

43972349 is an equidigital number, since it uses as much as digits as its factorization.

43972349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 41.

The square root of 43972349 is about 6631.1649806048. The cubic root of 43972349 is about 352.9608652617.

The spelling of 43972349 in words is "forty-three million, nine hundred seventy-two thousand, three hundred forty-nine".