2986009 has 4 divisors (see below), whose sum is σ = 3215716. Its totient is φ = 2756304.

The previous prime is 2986003. The next prime is 2986031. The reversal of 2986009 is 9006892.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 435600 + 2550409 = 660^2 + 1597^2 .

It is a cyclic number.

It is not a de Polignac number, because 2986009 - 2⁷ = 2985881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2986003) 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, 114834 + ... + 114859.

It is an arithmetic number, because the mean of its divisors is an integer number (803929).

2^2986009 is an apocalyptic number.

It is an amenable number.

2986009 is a deficient number, since it is larger than the sum of its proper divisors (229707).

2986009 is a wasteful number, since it uses less digits than its factorization.

2986009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229706.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 2986009 is about 1728.0072337812. The cubic root of 2986009 is about 144.0004018765. Note that the first 3 decimals are identical.

It can be divided in two parts, 29 and 86009, that multiplied together give a triangular number (2494261 = T₂₂₃₃).

The spelling of 2986009 in words is "two million, nine hundred eighty-six thousand, nine".