2845139 has 8 divisors (see below), whose sum is σ = 3123120. Its totient is φ = 2570400.

The previous prime is 2845133. The next prime is 2845147. The reversal of 2845139 is 9315482.

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 2845139 - 2¹⁶ = 2779603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2845133) 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 7 ways as a sum of consecutive naturals, for example, 1277 + ... + 2705.

It is an arithmetic number, because the mean of its divisors is an integer number (390390).

2^2845139 is an apocalyptic number.

2845139 is a deficient number, since it is larger than the sum of its proper divisors (277981).

2845139 is a wasteful number, since it uses less digits than its factorization.

2845139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621.

The product of its digits is 8640, while the sum is 32.

The square root of 2845139 is about 1686.7539832471. The cubic root of 2845139 is about 141.6993407141.

The spelling of 2845139 in words is "two million, eight hundred forty-five thousand, one hundred thirty-nine".