2785939 has 12 divisors (see below), whose sum is σ = 3114048. Its totient is φ = 2477520.

The previous prime is 2785907. The next prime is 2785961. The reversal of 2785939 is 9395872.

It is a happy number.

It is not a de Polignac number, because 2785939 - 2⁵ = 2785907 is a prime.

It is a super-2 number, since 2×2785939² = 15522912223442, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2 + 7⁷ + 8³ + 5⁹ + 9 + 3⁷ + 9⁴ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2785895 and 2785904.

It is not an unprimeable number, because it can be changed into a prime (2785339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12382 + ... + 12604.

It is an arithmetic number, because the mean of its divisors is an integer number (259504).

2^2785939 is an apocalyptic number.

2785939 is a deficient number, since it is larger than the sum of its proper divisors (328109).

2785939 is a wasteful number, since it uses less digits than its factorization.

2785939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 267 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 2785939 is about 1669.1132376205. The cubic root of 2785939 is about 140.7096451060.

The spelling of 2785939 in words is "two million, seven hundred eighty-five thousand, nine hundred thirty-nine".