43978622 has 8 divisors (see below), whose sum is σ = 68836176. Its totient is φ = 21033232.

The previous prime is 43978601. The next prime is 43978633. The reversal of 43978622 is 22687934.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 43978622.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477983 + ... + 478074.

It is an arithmetic number, because the mean of its divisors is an integer number (8604522).

Almost surely, 2^43978622 is an apocalyptic number.

43978622 is a deficient number, since it is larger than the sum of its proper divisors (24857554).

43978622 is a wasteful number, since it uses less digits than its factorization.

43978622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956082.

The product of its digits is 145152, while the sum is 41.

The square root of 43978622 is about 6631.6379575486. The cubic root of 43978622 is about 352.9776486743.

The spelling of 43978622 in words is "forty-three million, nine hundred seventy-eight thousand, six hundred twenty-two".