8340139 has 8 divisors (see below), whose sum is σ = 8694000. Its totient is φ = 7990752.

The previous prime is 8340131. The next prime is 8340161. The reversal of 8340139 is 9310438.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8340139 - 2³ = 8340131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8340131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2997 + ... + 5065.

It is an arithmetic number, because the mean of its divisors is an integer number (1086750).

Almost surely, 2^8340139 is an apocalyptic number.

8340139 is a deficient number, since it is larger than the sum of its proper divisors (353861).

8340139 is a wasteful number, since it uses less digits than its factorization.

8340139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 8340139 is about 2887.9298814203. The cubic root of 8340139 is about 202.7952427539.

Subtracting 8340139 from its reverse (9310438), we obtain a cube (970299 = 99³).

The spelling of 8340139 in words is "eight million, three hundred forty thousand, one hundred thirty-nine".