8890139 has 4 divisors (see below), whose sum is σ = 8918856. Its totient is φ = 8861424.

The previous prime is 8890129. The next prime is 8890187. The reversal of 8890139 is 9310988.

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 8890139 - 2⁸ = 8889883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8890109) 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, 13889 + ... + 14514.

It is an arithmetic number, because the mean of its divisors is an integer number (2229714).

Almost surely, 2^8890139 is an apocalyptic number.

8890139 is a deficient number, since it is larger than the sum of its proper divisors (28717).

8890139 is a wasteful number, since it uses less digits than its factorization.

8890139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28716.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 8890139 is about 2981.6336126359. The cubic root of 8890139 is about 207.1585442398.

The spelling of 8890139 in words is "eight million, eight hundred ninety thousand, one hundred thirty-nine".