72044943 has 4 divisors (see below), whose sum is σ = 96059928. Its totient is φ = 48029960.

The previous prime is 72044939. The next prime is 72044971. The reversal of 72044943 is 34944027.

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 72044943 - 2² = 72044939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72044923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12007488 + ... + 12007493.

It is an arithmetic number, because the mean of its divisors is an integer number (24014982).

Almost surely, 2^72044943 is an apocalyptic number.

72044943 is a deficient number, since it is larger than the sum of its proper divisors (24014985).

72044943 is a wasteful number, since it uses less digits than its factorization.

72044943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24014984.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 72044943 is about 8487.9292527683. The cubic root of 72044943 is about 416.1033069831.

The spelling of 72044943 in words is "seventy-two million, forty-four thousand, nine hundred forty-three".