43386961 has 2 divisors, whose sum is σ = 43386962. Its totient is φ = 43386960.

The previous prime is 43386943. The next prime is 43386991. The reversal of 43386961 is 16968334.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32947600 + 10439361 = 5740^2 + 3231^2 .

It is a cyclic number.

It is not a de Polignac number, because 43386961 - 2¹⁵ = 43354193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43386911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21693480 + 21693481.

It is an arithmetic number, because the mean of its divisors is an integer number (21693481).

Almost surely, 2^43386961 is an apocalyptic number.

It is an amenable number.

43386961 is a deficient number, since it is larger than the sum of its proper divisors (1).

43386961 is an equidigital number, since it uses as much as digits as its factorization.

43386961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The square root of 43386961 is about 6586.8779402688. The cubic root of 43386961 is about 351.3875827839.

The spelling of 43386961 in words is "forty-three million, three hundred eighty-six thousand, nine hundred sixty-one".