43424779 has 2 divisors, whose sum is σ = 43424780. Its totient is φ = 43424778.

The previous prime is 43424761. The next prime is 43424819. The reversal of 43424779 is 97742434.

It is an a-pointer prime, because the next prime (43424819) can be obtained adding 43424779 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43424779 - 2⁹ = 43424267 is a prime.

It is a super-2 number, since 2×43424779² = 3771422862397682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43424179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21712389 + 21712390.

It is an arithmetic number, because the mean of its divisors is an integer number (21712390).

Almost surely, 2^43424779 is an apocalyptic number.

43424779 is a deficient number, since it is larger than the sum of its proper divisors (1).

43424779 is an equidigital number, since it uses as much as digits as its factorization.

43424779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 40.

The square root of 43424779 is about 6589.7480224968. The cubic root of 43424779 is about 351.4896481367.

The spelling of 43424779 in words is "forty-three million, four hundred twenty-four thousand, seven hundred seventy-nine".