43968439 has 2 divisors, whose sum is σ = 43968440. Its totient is φ = 43968438.

The previous prime is 43968389. The next prime is 43968461. The reversal of 43968439 is 93486934.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43968439 - 2¹³ = 43960247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43968139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21984219 + 21984220.

It is an arithmetic number, because the mean of its divisors is an integer number (21984220).

Almost surely, 2^43968439 is an apocalyptic number.

43968439 is a deficient number, since it is larger than the sum of its proper divisors (1).

43968439 is an equidigital number, since it uses as much as digits as its factorization.

43968439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 46.

The square root of 43968439 is about 6630.8701540597. The cubic root of 43968439 is about 352.9504032484.

The spelling of 43968439 in words is "forty-three million, nine hundred sixty-eight thousand, four hundred thirty-nine".