43438372 has 6 divisors (see below), whose sum is σ = 76017158. Its totient is φ = 21719184.

The previous prime is 43438363. The next prime is 43438391. The reversal of 43438372 is 27383434.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 42302016 + 1136356 = 6504^2 + 1066^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5429793 + ... + 5429800.

Almost surely, 2^43438372 is an apocalyptic number.

It is an amenable number.

43438372 is a deficient number, since it is larger than the sum of its proper divisors (32578786).

43438372 is a wasteful number, since it uses less digits than its factorization.

43438372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10859597 (or 10859595 counting only the distinct ones).

The product of its digits is 48384, while the sum is 34.

The square root of 43438372 is about 6590.7793165907. The cubic root of 43438372 is about 351.5263192146.

The spelling of 43438372 in words is "forty-three million, four hundred thirty-eight thousand, three hundred seventy-two".