2389993 has 2 divisors, whose sum is σ = 2389994. Its totient is φ = 2389992.

The previous prime is 2389973. The next prime is 2390009. The reversal of 2389993 is 3999832.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2111209 + 278784 = 1453^2 + 528^2 .

It is a cyclic number.

It is not a de Polignac number, because 2389993 - 2⁹ = 2389481 is a prime.

It is not a weakly prime, because it can be changed into another prime (2389943) 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, 1194996 + 1194997.

It is an arithmetic number, because the mean of its divisors is an integer number (1194997).

2^2389993 is an apocalyptic number.

It is an amenable number.

2389993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2389993 is an equidigital number, since it uses as much as digits as its factorization.

2389993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 43.

The square root of 2389993 is about 1545.9602194106. The cubic root of 2389993 is about 133.7002470203.

The spelling of 2389993 in words is "two million, three hundred eighty-nine thousand, nine hundred ninety-three".