2784989 has 8 divisors (see below), whose sum is σ = 2854368. Its totient is φ = 2716560.

The previous prime is 2784979. The next prime is 2784997. The reversal of 2784989 is 9894872.

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 2784989 - 2⁴ = 2784973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2784949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13094 + ... + 13304.

It is an arithmetic number, because the mean of its divisors is an integer number (356796).

2^2784989 is an apocalyptic number.

It is an amenable number.

2784989 is a deficient number, since it is larger than the sum of its proper divisors (69379).

2784989 is a wasteful number, since it uses less digits than its factorization.

2784989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475.

The product of its digits is 290304, while the sum is 47.

The square root of 2784989 is about 1668.8286311063. The cubic root of 2784989 is about 140.6936493789.

It can be divided in two parts, 2784 and 989, that added together give a palindrome (3773).

The spelling of 2784989 in words is "two million, seven hundred eighty-four thousand, nine hundred eighty-nine".