2998309 has 4 divisors (see below), whose sum is σ = 3003616. Its totient is φ = 2993004.

The previous prime is 2998301. The next prime is 2998313. The reversal of 2998309 is 9038992.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 2998309 - 2³ = 2998301 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 (2998301) 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, 1689 + ... + 2974.

It is an arithmetic number, because the mean of its divisors is an integer number (750904).

2^2998309 is an apocalyptic number.

It is an amenable number.

2998309 is a deficient number, since it is larger than the sum of its proper divisors (5307).

2998309 is an equidigital number, since it uses as much as digits as its factorization.

2998309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 2998309 is about 1731.5625891085. The cubic root of 2998309 is about 144.1978536708.

The spelling of 2998309 in words is "two million, nine hundred ninety-eight thousand, three hundred nine".