2306989 has 4 divisors (see below), whose sum is σ = 2381440. Its totient is φ = 2232540.

The previous prime is 2306981. The next prime is 2307031. The reversal of 2306989 is 9896032.

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 2306989 - 2³ = 2306981 is a prime.

It is a super-2 number, since 2×2306989² = 10644396492242, which contains 22 as substring.

It is a Duffinian number.

2306989 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2306981) 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, 37179 + ... + 37240.

It is an arithmetic number, because the mean of its divisors is an integer number (595360).

2^2306989 is an apocalyptic number.

It is an amenable number.

2306989 is a deficient number, since it is larger than the sum of its proper divisors (74451).

2306989 is an equidigital number, since it uses as much as digits as its factorization.

2306989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74450.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 2306989 is about 1518.8775460846. The cubic root of 2306989 is about 132.1341802087.

The spelling of 2306989 in words is "two million, three hundred six thousand, nine hundred eighty-nine".