6440062404 has 12 divisors (see below), whose sum is σ = 15026812304. Its totient is φ = 2146687464.

The previous prime is 6440062403. The next prime is 6440062411. The reversal of 6440062404 is 4042600446.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (6440062403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268335922 + ... + 268335945.

Almost surely, 2^6440062404 is an apocalyptic number.

It is an amenable number.

6440062404 is an abundant number, since it is smaller than the sum of its proper divisors (8586749900).

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

6440062404 is a wasteful number, since it uses less digits than its factorization.

6440062404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536671874 (or 536671872 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 6440062404 is about 80249.9994018692. Note that the first 3 decimals coincide. The cubic root of 6440062404 is about 1860.5015031096.

The spelling of 6440062404 in words is "six billion, four hundred forty million, sixty-two thousand, four hundred four".