2986989 has 4 divisors (see below), whose sum is σ = 3982656. Its totient is φ = 1991324.

The previous prime is 2986979. The next prime is 2986999. The reversal of 2986989 is 9896892.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2986979) and next prime (2986999).

It is a cyclic number.

It is not a de Polignac number, because 2986989 - 2⁵ = 2986957 is a prime.

It is a super-2 number, since 2×2986989² = 17844206572242, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2986939) 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, 497829 + ... + 497834.

It is an arithmetic number, because the mean of its divisors is an integer number (995664).

2^2986989 is an apocalyptic number.

It is an amenable number.

2986989 is a deficient number, since it is larger than the sum of its proper divisors (995667).

2986989 is an equidigital number, since it uses as much as digits as its factorization.

2986989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995666.

The product of its digits is 559872, while the sum is 51.

The square root of 2986989 is about 1728.2907741465. The cubic root of 2986989 is about 144.0161536662.

Subtracting 2986989 from its reverse (9896892), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 2986989 in words is "two million, nine hundred eighty-six thousand, nine hundred eighty-nine".