2858139 has 16 divisors (see below), whose sum is σ = 4350240. Its totient is φ = 1853280.

The previous prime is 2858129. The next prime is 2858161. The reversal of 2858139 is 9318582.

It is not a de Polignac number, because 2858139 - 2⁴ = 2858123 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2858129) 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 15 ways as a sum of consecutive naturals, for example, 432 + ... + 2429.

It is an arithmetic number, because the mean of its divisors is an integer number (271890).

2^2858139 is an apocalyptic number.

2858139 is a deficient number, since it is larger than the sum of its proper divisors (1492101).

2858139 is a wasteful number, since it uses less digits than its factorization.

2858139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2907 (or 2901 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 2858139 is about 1690.6031468089. The cubic root of 2858139 is about 141.9148302331.

The spelling of 2858139 in words is "two million, eight hundred fifty-eight thousand, one hundred thirty-nine".