1985884 has 6 divisors (see below), whose sum is σ = 3475304. Its totient is φ = 992940.

The previous prime is 1985873. The next prime is 1985887. The reversal of 1985884 is 4885891.

It is a super-2 number, since 2×1985884² = 7887470522912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1985884.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248232 + ... + 248239.

2^1985884 is an apocalyptic number.

It is an amenable number.

1985884 is a deficient number, since it is larger than the sum of its proper divisors (1489420).

1985884 is a wasteful number, since it uses less digits than its factorization.

1985884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496475 (or 496473 counting only the distinct ones).

The product of its digits is 92160, while the sum is 43.

The square root of 1985884 is about 1409.2139653012. The cubic root of 1985884 is about 125.6949874450.

The spelling of 1985884 in words is "one million, nine hundred eighty-five thousand, eight hundred eighty-four".