1290487 has 16 divisors (see below), whose sum is σ = 1527552. Its totient is φ = 1077120.

The previous prime is 1290469. The next prime is 1290491. The reversal of 1290487 is 7840921.

It is not a de Polignac number, because 1290487 - 2¹¹ = 1288439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290427) 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 in 15 ways as a sum of consecutive naturals, for example, 12478 + ... + 12580.

It is an arithmetic number, because the mean of its divisors is an integer number (95472).

2^1290487 is an apocalyptic number.

1290487 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1290487 is a deficient number, since it is larger than the sum of its proper divisors (237065).

1290487 is a wasteful number, since it uses less digits than its factorization.

1290487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1290487 is about 1135.9960387255. The cubic root of 1290487 is about 108.8724203810.

The spelling of 1290487 in words is "one million, two hundred ninety thousand, four hundred eighty-seven".