1288487 has 2 divisors, whose sum is σ = 1288488. Its totient is φ = 1288486.

The previous prime is 1288439. The next prime is 1288513. The reversal of 1288487 is 7848821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1288487 - 2⁶ = 1288423 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1288487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1288187) 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, 644243 + 644244.

It is an arithmetic number, because the mean of its divisors is an integer number (644244).

2^1288487 is an apocalyptic number.

1288487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288487 is an equidigital number, since it uses as much as digits as its factorization.

1288487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28672, while the sum is 38.

The square root of 1288487 is about 1135.1154126343. The cubic root of 1288487 is about 108.8161477168.

The spelling of 1288487 in words is "one million, two hundred eighty-eight thousand, four hundred eighty-seven".