43919444 has 12 divisors (see below), whose sum is σ = 78936564. Its totient is φ = 21366144.

The previous prime is 43919441. The next prime is 43919461. The reversal of 43919444 is 44491934.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19909444 + 24010000 = 4462^2 + 4900^2 .

It is a super-2 number, since 2×43919444² = 3857835122538272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43919398 and 43919407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43919441) 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 3 ways as a sum of consecutive naturals, for example, 148229 + ... + 148524.

It is an arithmetic number, because the mean of its divisors is an integer number (6578047).

Almost surely, 2^43919444 is an apocalyptic number.

It is an amenable number.

43919444 is a deficient number, since it is larger than the sum of its proper divisors (35017120).

43919444 is a wasteful number, since it uses less digits than its factorization.

43919444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296794 (or 296792 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 43919444 is about 6627.1746619506. The cubic root of 43919444 is about 352.8192543863.

The spelling of 43919444 in words is "forty-three million, nine hundred nineteen thousand, four hundred forty-four".