43994422 has 4 divisors (see below), whose sum is σ = 65991636. Its totient is φ = 21997210.

The previous prime is 43994417. The next prime is 43994429. The reversal of 43994422 is 22449934.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×43994422² = 3871018334228168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43994429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10998604 + ... + 10998607.

It is an arithmetic number, because the mean of its divisors is an integer number (16497909).

Almost surely, 2^43994422 is an apocalyptic number.

43994422 is a deficient number, since it is larger than the sum of its proper divisors (21997214).

43994422 is a wasteful number, since it uses less digits than its factorization.

43994422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21997213.

The product of its digits is 62208, while the sum is 37.

The square root of 43994422 is about 6632.8291098143. The cubic root of 43994422 is about 353.0199145059.

The spelling of 43994422 in words is "forty-three million, nine hundred ninety-four thousand, four hundred twenty-two".