1984887 has 6 divisors (see below), whose sum is σ = 2867072. Its totient is φ = 1323252.

The previous prime is 1984867. The next prime is 1984891. The reversal of 1984887 is 7884891.

It is not a de Polignac number, because 1984887 - 2¹¹ = 1982839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1984817) 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 5 ways as a sum of consecutive naturals, for example, 110263 + ... + 110280.

2^1984887 is an apocalyptic number.

1984887 is a deficient number, since it is larger than the sum of its proper divisors (882185).

1984887 is a wasteful number, since it uses less digits than its factorization.

1984887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220549 (or 220546 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 1984887 is about 1408.8601775904. The cubic root of 1984887 is about 125.6739491433.

The spelling of 1984887 in words is "one million, nine hundred eighty-four thousand, eight hundred eighty-seven".