43113779 has 2 divisors, whose sum is σ = 43113780. Its totient is φ = 43113778.

The previous prime is 43113773. The next prime is 43113781. The reversal of 43113779 is 97731134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43113779 - 2²⁰ = 42065203 is a prime.

Together with 43113781, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43113773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21556889 + 21556890.

It is an arithmetic number, because the mean of its divisors is an integer number (21556890).

Almost surely, 2^43113779 is an apocalyptic number.

43113779 is a deficient number, since it is larger than the sum of its proper divisors (1).

43113779 is an equidigital number, since it uses as much as digits as its factorization.

43113779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 35.

The square root of 43113779 is about 6566.1083603608. The cubic root of 43113779 is about 350.6485363208.

The spelling of 43113779 in words is "forty-three million, one hundred thirteen thousand, seven hundred seventy-nine".