43939061 has 2 divisors, whose sum is σ = 43939062. Its totient is φ = 43939060.

The previous prime is 43939019. The next prime is 43939073. The reversal of 43939061 is 16093934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25060036 + 18879025 = 5006^2 + 4345^2 .

It is a cyclic number.

It is not a de Polignac number, because 43939061 - 2¹⁴ = 43922677 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43939081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21969530 + 21969531.

It is an arithmetic number, because the mean of its divisors is an integer number (21969531).

Almost surely, 2^43939061 is an apocalyptic number.

It is an amenable number.

43939061 is a deficient number, since it is larger than the sum of its proper divisors (1).

43939061 is an equidigital number, since it uses as much as digits as its factorization.

43939061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 43939061 is about 6628.6545391957. The cubic root of 43939061 is about 352.8717764923.

The spelling of 43939061 in words is "forty-three million, nine hundred thirty-nine thousand, sixty-one".