8469139 has 4 divisors (see below), whose sum is σ = 9679024. Its totient is φ = 7259256.

The previous prime is 8469133. The next prime is 8469161. The reversal of 8469139 is 9319648.

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 8469139 - 2⁹ = 8468627 is a prime.

It is a Duffinian number.

8469139 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8469133) 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, 604932 + ... + 604945.

It is an arithmetic number, because the mean of its divisors is an integer number (2419756).

Almost surely, 2^8469139 is an apocalyptic number.

8469139 is a deficient number, since it is larger than the sum of its proper divisors (1209885).

8469139 is a wasteful number, since it uses less digits than its factorization.

8469139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209884.

The product of its digits is 46656, while the sum is 40.

The square root of 8469139 is about 2910.1785168611. The cubic root of 8469139 is about 203.8354674246.

The spelling of 8469139 in words is "eight million, four hundred sixty-nine thousand, one hundred thirty-nine".