43873013 has 2 divisors, whose sum is σ = 43873014. Its totient is φ = 43873012.

The previous prime is 43872979. The next prime is 43873051. The reversal of 43873013 is 31037834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24671089 + 19201924 = 4967^2 + 4382^2 .

It is a cyclic number.

It is not a de Polignac number, because 43873013 - 2¹⁸ = 43610869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43873913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21936506 + 21936507.

It is an arithmetic number, because the mean of its divisors is an integer number (21936507).

Almost surely, 2^43873013 is an apocalyptic number.

It is an amenable number.

43873013 is a deficient number, since it is larger than the sum of its proper divisors (1).

43873013 is an equidigital number, since it uses as much as digits as its factorization.

43873013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 43873013 is about 6623.6706590832. The cubic root of 43873013 is about 352.6948787449.

The spelling of 43873013 in words is "forty-three million, eight hundred seventy-three thousand, thirteen".