2009985480 has 96 divisors (see below), whose sum is σ = 6916735800. Its totient is φ = 504465408.

The previous prime is 2009985427. The next prime is 2009985487. The reversal of 2009985480 is 845899002.

2009985480 is a `hidden beast` number, since 2 + 0 + 0 + 99 + 85 + 480 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2002920516 + 7064964 = 44754^2 + 2658^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2009985487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158095 + ... + 170334.

Almost surely, 2^2009985480 is an apocalyptic number.

2009985480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2009985480 is an abundant number, since it is smaller than the sum of its proper divisors (4906750320).

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

2009985480 is a wasteful number, since it uses less digits than its factorization.

2009985480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328463 (or 328456 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 2009985480 is about 44832.8616084229. The cubic root of 2009985480 is about 1262.0143893249.

The spelling of 2009985480 in words is "two billion, nine million, nine hundred eighty-five thousand, four hundred eighty".