73944443 has 4 divisors (see below), whose sum is σ = 75748008. Its totient is φ = 72140880.

The previous prime is 73944439. The next prime is 73944467. The reversal of 73944443 is 34444937.

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

It is a cyclic number.

It is not a de Polignac number, because 73944443 - 2² = 73944439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73944397 and 73944406.

It is not an unprimeable number, because it can be changed into a prime (73944433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901721 + ... + 901802.

It is an arithmetic number, because the mean of its divisors is an integer number (18937002).

Almost surely, 2^73944443 is an apocalyptic number.

73944443 is a deficient number, since it is larger than the sum of its proper divisors (1803565).

73944443 is a wasteful number, since it uses less digits than its factorization.

73944443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803564.

The product of its digits is 145152, while the sum is 38.

The square root of 73944443 is about 8599.0954756881. The cubic root of 73944443 is about 419.7285528699.

The spelling of 73944443 in words is "seventy-three million, nine hundred forty-four thousand, four hundred forty-three".