43440698029 has 2 divisors, whose sum is σ = 43440698030. Its totient is φ = 43440698028.

The previous prime is 43440698027. The next prime is 43440698033. The reversal of 43440698029 is 92089604434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41636402500 + 1804295529 = 204050^2 + 42477^2 .

It is a cyclic number.

It is not a de Polignac number, because 43440698029 - 2¹ = 43440698027 is a prime.

Together with 43440698027, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43440698027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21720349014 + 21720349015.

It is an arithmetic number, because the mean of its divisors is an integer number (21720349015).

Almost surely, 2^43440698029 is an apocalyptic number.

It is an amenable number.

43440698029 is a deficient number, since it is larger than the sum of its proper divisors (1).

43440698029 is an equidigital number, since it uses as much as digits as its factorization.

43440698029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 43440698029 in words is "forty-three billion, four hundred forty million, six hundred ninety-eight thousand, twenty-nine".