8946138442 has 4 divisors (see below), whose sum is σ = 13419207666. Its totient is φ = 4473069220.

The previous prime is 8946138373. The next prime is 8946138449. The reversal of 8946138442 is 2448316498.

8946138442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2448316498 = 2 ⋅1224158249.

It can be written as a sum of positive squares in only one way, i.e., 7821810481 + 1124327961 = 88441^2 + 33531^2 .

It is not an unprimeable number, because it can be changed into a prime (8946138449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2236534609 + ... + 2236534612.

Almost surely, 2^8946138442 is an apocalyptic number.

8946138442 is a deficient number, since it is larger than the sum of its proper divisors (4473069224).

8946138442 is a wasteful number, since it uses less digits than its factorization.

8946138442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4473069223.

The product of its digits is 1327104, while the sum is 49.

The square root of 8946138442 is about 94584.0284720417. The cubic root of 8946138442 is about 2075.9260156375.

The spelling of 8946138442 in words is "eight billion, nine hundred forty-six million, one hundred thirty-eight thousand, four hundred forty-two".