2839990 has 16 divisors (see below), whose sum is σ = 5171040. Its totient is φ = 1122880.

The previous prime is 2839981. The next prime is 2840023. The reversal of 2839990 is 999382.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 706 + ... + 2485.

It is an arithmetic number, because the mean of its divisors is an integer number (323190).

2^2839990 is an apocalyptic number.

2839990 is a deficient number, since it is larger than the sum of its proper divisors (2331050).

2839990 is a wasteful number, since it uses less digits than its factorization.

2839990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 2839990 is about 1685.2269876785. The cubic root of 2839990 is about 141.6138088079.

The spelling of 2839990 in words is "two million, eight hundred thirty-nine thousand, nine hundred ninety".