43874539 has 2 divisors, whose sum is σ = 43874540. Its totient is φ = 43874538.

The previous prime is 43874473. The next prime is 43874617. The reversal of 43874539 is 93547834.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43874539 - 2¹⁵ = 43841771 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43874495 and 43874504.

It is not a weakly prime, because it can be changed into another prime (43874839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21937269 + 21937270.

It is an arithmetic number, because the mean of its divisors is an integer number (21937270).

Almost surely, 2^43874539 is an apocalyptic number.

43874539 is a deficient number, since it is larger than the sum of its proper divisors (1).

43874539 is an equidigital number, since it uses as much as digits as its factorization.

43874539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 43.

The square root of 43874539 is about 6623.7858510070. The cubic root of 43874539 is about 352.6989678657.

The spelling of 43874539 in words is "forty-three million, eight hundred seventy-four thousand, five hundred thirty-nine".