43423643 has 8 divisors (see below), whose sum is σ = 45659280. Its totient is φ = 41237280.

The previous prime is 43423631. The next prime is 43423651. The reversal of 43423643 is 34632434.

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

It is a cyclic number.

It is not a de Polignac number, because 43423643 - 2⁶ = 43423579 is a prime.

It is a super-2 number, since 2×43423643² = 3771225542782898, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43423603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10505 + ... + 14042.

It is an arithmetic number, because the mean of its divisors is an integer number (5707410).

Almost surely, 2^43423643 is an apocalyptic number.

43423643 is a deficient number, since it is larger than the sum of its proper divisors (2235637).

43423643 is a wasteful number, since it uses less digits than its factorization.

43423643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24637.

The product of its digits is 20736, while the sum is 29.

The square root of 43423643 is about 6589.6618274385. The cubic root of 43423643 is about 351.4865830993.

The spelling of 43423643 in words is "forty-three million, four hundred twenty-three thousand, six hundred forty-three".