16440984 has 48 divisors (see below), whose sum is σ = 50890320. Its totient is φ = 4697280.

The previous prime is 16440979. The next prime is 16441003. The reversal of 16440984 is 48904461.

It is a happy number.

16440984 is a `hidden beast` number, since 1 + 644 + 0 + 9 + 8 + 4 = 666.

It is a super-3 number, since 3×16440984³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15807 + ... + 16814.

It is an arithmetic number, because the mean of its divisors is an integer number (1060215).

Almost surely, 2^16440984 is an apocalyptic number.

16440984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16440984 is an abundant number, since it is smaller than the sum of its proper divisors (34449336).

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

16440984 is a wasteful number, since it uses less digits than its factorization.

16440984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32640 (or 32633 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 16440984 is about 4054.7483275784. The cubic root of 16440984 is about 254.2782822267.

It can be divided in two parts, 16440 and 984, that added together give a square (17424 = 132²).

The spelling of 16440984 in words is "sixteen million, four hundred forty thousand, nine hundred eighty-four".