944639093539 has 4 divisors (see below), whose sum is σ = 946452220920. Its totient is φ = 942825966160.

The previous prime is 944639093537. The next prime is 944639093549. The reversal of 944639093539 is 935390936449.

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 944639093539 - 2¹ = 944639093537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (944639093537) 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, 906562909 + ... + 906563950.

It is an arithmetic number, because the mean of its divisors is an integer number (236613055230).

Almost surely, 2^944639093539 is an apocalyptic number.

944639093539 is a deficient number, since it is larger than the sum of its proper divisors (1813127381).

944639093539 is a wasteful number, since it uses less digits than its factorization.

944639093539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813127380.

The product of its (nonzero) digits is 85030560, while the sum is 64.

The spelling of 944639093539 in words is "nine hundred forty-four billion, six hundred thirty-nine million, ninety-three thousand, five hundred thirty-nine".