9438442989047 has 4 divisors (see below), whose sum is σ = 9525034209240. Its totient is φ = 9351851768856.

The previous prime is 9438442989043. The next prime is 9438442989127. The reversal of 9438442989047 is 7409892448349.

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 9438442989047 - 2² = 9438442989043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9438442989043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43295609933 + ... + 43295610150.

It is an arithmetic number, because the mean of its divisors is an integer number (2381258552310).

Almost surely, 2^{9438442989047} is an apocalyptic number.

9438442989047 is a deficient number, since it is larger than the sum of its proper divisors (86591220193).

9438442989047 is a wasteful number, since it uses less digits than its factorization.

9438442989047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86591220192.

The product of its (nonzero) digits is 501645312, while the sum is 71.

The spelling of 9438442989047 in words is "nine trillion, four hundred thirty-eight billion, four hundred forty-two million, nine hundred eighty-nine thousand, forty-seven".