43970657 has 2 divisors, whose sum is σ = 43970658. Its totient is φ = 43970656.

The previous prime is 43970629. The next prime is 43970669. The reversal of 43970657 is 75607934.

43970657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42393121 + 1577536 = 6511^2 + 1256^2 .

It is a cyclic number.

It is not a de Polignac number, because 43970657 - 2⁶ = 43970593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43970627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21985328 + 21985329.

It is an arithmetic number, because the mean of its divisors is an integer number (21985329).

Almost surely, 2^43970657 is an apocalyptic number.

It is an amenable number.

43970657 is a deficient number, since it is larger than the sum of its proper divisors (1).

43970657 is an equidigital number, since it uses as much as digits as its factorization.

43970657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 43970657 is about 6631.0373999850. The cubic root of 43970657 is about 352.9563380420.

The spelling of 43970657 in words is "forty-three million, nine hundred seventy thousand, six hundred fifty-seven".