1043987 has 16 divisors (see below), whose sum is σ = 1308672. Its totient is φ = 812160.

The previous prime is 1043981. The next prime is 1044019. The reversal of 1043987 is 7893401.

It is a cyclic number.

It is not a de Polignac number, because 1043987 - 2⁶ = 1043923 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1043981) 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, 3548 + ... + 3830.

It is an arithmetic number, because the mean of its divisors is an integer number (81792).

2^1043987 is an apocalyptic number.

1043987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1043987 is a deficient number, since it is larger than the sum of its proper divisors (264685).

1043987 is a wasteful number, since it uses less digits than its factorization.

1043987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1043987 is about 1021.7568203834. The cubic root of 1043987 is about 101.4452453672.

The spelling of 1043987 in words is "one million, forty-three thousand, nine hundred eighty-seven".