1984450 has 48 divisors (see below), whose sum is σ = 4124736. Its totient is φ = 705600.

The previous prime is 1984429. The next prime is 1984453. The reversal of 1984450 is 544891.

It is a happy number.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1984453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27915 + ... + 27985.

It is an arithmetic number, because the mean of its divisors is an integer number (85932).

2^1984450 is an apocalyptic number.

1984450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1984450 is an abundant number, since it is smaller than the sum of its proper divisors (2140286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1984450 is a wasteful number, since it uses less digits than its factorization.

1984450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1984450 is about 1408.7050791418. The cubic root of 1984450 is about 125.6647255206.

The spelling of 1984450 in words is "one million, nine hundred eighty-four thousand, four hundred fifty".