8943139 has 4 divisors (see below), whose sum is σ = 9469224. Its totient is φ = 8417056.

The previous prime is 8943133. The next prime is 8943199. The reversal of 8943139 is 9313498.

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 8943139 - 2¹¹ = 8941091 is a prime.

It is a Duffinian number.

8943139 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8943098 and 8943107.

It is not an unprimeable number, because it can be changed into a prime (8943133) 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, 263017 + ... + 263050.

It is an arithmetic number, because the mean of its divisors is an integer number (2367306).

Almost surely, 2^8943139 is an apocalyptic number.

8943139 is a deficient number, since it is larger than the sum of its proper divisors (526085).

8943139 is a wasteful number, since it uses less digits than its factorization.

8943139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526084.

The product of its digits is 23328, while the sum is 37.

The square root of 8943139 is about 2990.5081507998. The cubic root of 8943139 is about 207.5693985705.

The spelling of 8943139 in words is "eight million, nine hundred forty-three thousand, one hundred thirty-nine".