2816989 has 8 divisors (see below), whose sum is σ = 3250368. Its totient is φ = 2391360.

The previous prime is 2816981. The next prime is 2817007. The reversal of 2816989 is 9896182.

It is a happy number.

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 2816989 - 2³ = 2816981 is a prime.

It is a super-2 number, since 2×2816989² = 15870854052242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2816981) 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, 1132 + ... + 2629.

It is an arithmetic number, because the mean of its divisors is an integer number (406296).

2^2816989 is an apocalyptic number.

It is an amenable number.

2816989 is a deficient number, since it is larger than the sum of its proper divisors (433379).

2816989 is a wasteful number, since it uses less digits than its factorization.

2816989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3875.

The product of its digits is 62208, while the sum is 43.

The square root of 2816989 is about 1678.3888107349. The cubic root of 2816989 is about 141.2304632702.

The spelling of 2816989 in words is "two million, eight hundred sixteen thousand, nine hundred eighty-nine".