43129449 has 32 divisors (see below), whose sum is σ = 73382400. Its totient is φ = 24760080.

The previous prime is 43129433. The next prime is 43129507. The reversal of 43129449 is 94492134.

It is not a de Polignac number, because 43129449 - 2⁴ = 43129433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43129249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1822 + ... + 9464.

It is an arithmetic number, because the mean of its divisors is an integer number (2293200).

Almost surely, 2^43129449 is an apocalyptic number.

It is an amenable number.

43129449 is a deficient number, since it is larger than the sum of its proper divisors (30252951).

43129449 is a wasteful number, since it uses less digits than its factorization.

43129449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7682 (or 7676 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 43129449 is about 6567.3015006165. The cubic root of 43129449 is about 350.6910130505.

The spelling of 43129449 in words is "forty-three million, one hundred twenty-nine thousand, four hundred forty-nine".