2427989 has 2 divisors, whose sum is σ = 2427990. Its totient is φ = 2427988.

The previous prime is 2427961. The next prime is 2428003. The reversal of 2427989 is 9897242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2427364 + 625 = 1558^2 + 25^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2427989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2427289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1213994 + 1213995.

It is an arithmetic number, because the mean of its divisors is an integer number (1213995).

2^2427989 is an apocalyptic number.

It is an amenable number.

2427989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2427989 is an equidigital number, since it uses as much as digits as its factorization.

2427989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 2427989 is about 1558.2005647541. The cubic root of 2427989 is about 134.4050453097.

The spelling of 2427989 in words is "two million, four hundred twenty-seven thousand, nine hundred eighty-nine".