2303989 has 2 divisors, whose sum is σ = 2303990. Its totient is φ = 2303988.

The previous prime is 2303981. The next prime is 2303999. The reversal of 2303989 is 9893032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1368900 + 935089 = 1170^2 + 967^2 .

It is a cyclic number.

It is not a de Polignac number, because 2303989 - 2³ = 2303981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2303981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1151994 + 1151995.

It is an arithmetic number, because the mean of its divisors is an integer number (1151995).

2^2303989 is an apocalyptic number.

It is an amenable number.

2303989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2303989 is an equidigital number, since it uses as much as digits as its factorization.

2303989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 2303989 is about 1517.8896534333. The cubic root of 2303989 is about 132.0768797633.

The spelling of 2303989 in words is "two million, three hundred three thousand, nine hundred eighty-nine".