43319949 has 12 divisors (see below), whose sum is σ = 58448256. Its totient is φ = 28539808.

The previous prime is 43319923. The next prime is 43319951. The reversal of 43319949 is 94991334.

It is not a de Polignac number, because 43319949 - 2¹⁷ = 43188877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43319949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43319249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22852 + ... + 24674.

It is an arithmetic number, because the mean of its divisors is an integer number (4870688).

Almost surely, 2^43319949 is an apocalyptic number.

It is an amenable number.

43319949 is a deficient number, since it is larger than the sum of its proper divisors (15128307).

43319949 is an equidigital number, since it uses as much as digits as its factorization.

43319949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004 (or 1915 counting only the distinct ones).

The product of its digits is 104976, while the sum is 42.

The square root of 43319949 is about 6581.7891944364. The cubic root of 43319949 is about 351.2065812603.

The spelling of 43319949 in words is "forty-three million, three hundred nineteen thousand, nine hundred forty-nine".