2405987 has 2 divisors, whose sum is σ = 2405988. Its totient is φ = 2405986.

The previous prime is 2405983. The next prime is 2406029. The reversal of 2405987 is 7895042.

It is a happy number.

2405987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2405987 - 2² = 2405983 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2405981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1202993 + 1202994.

It is an arithmetic number, because the mean of its divisors is an integer number (1202994).

2^2405987 is an apocalyptic number.

2405987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2405987 is an equidigital number, since it uses as much as digits as its factorization.

2405987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 2405987 is about 1551.1244308565. The cubic root of 2405987 is about 133.9978279889.

The spelling of 2405987 in words is "two million, four hundred five thousand, nine hundred eighty-seven".