1986484 has 24 divisors (see below), whose sum is σ = 3725568. Its totient is φ = 923520.

The previous prime is 1986461. The next prime is 1986497. The reversal of 1986484 is 4846891.

It is a super-2 number, since 2×1986484² = 7892237364512, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8797 + ... + 9019.

It is an arithmetic number, because the mean of its divisors is an integer number (155232).

2^1986484 is an apocalyptic number.

It is an amenable number.

1986484 is a deficient number, since it is larger than the sum of its proper divisors (1739084).

1986484 is a wasteful number, since it uses less digits than its factorization.

1986484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 373 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 1986484 is about 1409.4268338584. The cubic root of 1986484 is about 125.7076450152.

The spelling of 1986484 in words is "one million, nine hundred eighty-six thousand, four hundred eighty-four".