43454779 has 2 divisors, whose sum is σ = 43454780. Its totient is φ = 43454778.

The previous prime is 43454717. The next prime is 43454791. The reversal of 43454779 is 97745434.

43454779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43454779 is a prime.

It is not a weakly prime, because it can be changed into another prime (43457779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21727389 + 21727390.

It is an arithmetic number, because the mean of its divisors is an integer number (21727390).

Almost surely, 2^43454779 is an apocalyptic number.

43454779 is a deficient number, since it is larger than the sum of its proper divisors (1).

43454779 is an equidigital number, since it uses as much as digits as its factorization.

43454779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 43.

The square root of 43454779 is about 6592.0238925538. The cubic root of 43454779 is about 351.5705716889.

The spelling of 43454779 in words is "forty-three million, four hundred fifty-four thousand, seven hundred seventy-nine".