8840138 has 4 divisors (see below), whose sum is σ = 13260210. Its totient is φ = 4420068.

The previous prime is 8840137. The next prime is 8840141. The reversal of 8840138 is 8310488.

8840138 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.

It can be written as a sum of positive squares in only one way, i.e., 7579009 + 1261129 = 2753^2 + 1123^2 .

It is not an unprimeable number, because it can be changed into a prime (8840131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2210033 + ... + 2210036.

Almost surely, 2^8840138 is an apocalyptic number.

8840138 is a deficient number, since it is larger than the sum of its proper divisors (4420072).

8840138 is a wasteful number, since it uses less digits than its factorization.

8840138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420071.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 8840138 is about 2973.2369565845. The cubic root of 8840138 is about 206.7694384213.

The spelling of 8840138 in words is "eight million, eight hundred forty thousand, one hundred thirty-eight".