43439349 has 4 divisors (see below), whose sum is σ = 57919136. Its totient is φ = 28959564.

The previous prime is 43439329. The next prime is 43439353. The reversal of 43439349 is 94393434.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 43439349 - 2¹² = 43435253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43439309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7239889 + ... + 7239894.

It is an arithmetic number, because the mean of its divisors is an integer number (14479784).

Almost surely, 2^43439349 is an apocalyptic number.

It is an amenable number.

43439349 is a deficient number, since it is larger than the sum of its proper divisors (14479787).

43439349 is a wasteful number, since it uses less digits than its factorization.

43439349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14479786.

The product of its digits is 139968, while the sum is 39.

The square root of 43439349 is about 6590.8534348747. The cubic root of 43439349 is about 351.5289546620.

The spelling of 43439349 in words is "forty-three million, four hundred thirty-nine thousand, three hundred forty-nine".