2839988 has 12 divisors (see below), whose sum is σ = 5091492. Its totient is φ = 1385280.

The previous prime is 2839981. The next prime is 2840023. The reversal of 2839988 is 8899382.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1170724 + 1669264 = 1082^2 + 1292^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2839981) 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, 8495 + ... + 8822.

It is an arithmetic number, because the mean of its divisors is an integer number (424291).

2^2839988 is an apocalyptic number.

It is an amenable number.

2839988 is a deficient number, since it is larger than the sum of its proper divisors (2251504).

2839988 is a wasteful number, since it uses less digits than its factorization.

2839988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17362 (or 17360 counting only the distinct ones).

The product of its digits is 248832, while the sum is 47.

The square root of 2839988 is about 1685.2263942865. The cubic root of 2839988 is about 141.6137755651.

The spelling of 2839988 in words is "two million, eight hundred thirty-nine thousand, nine hundred eighty-eight".