440021602 has 8 divisors (see below), whose sum is σ = 688729536. Its totient is φ = 210445092.

The previous prime is 440021581. The next prime is 440021641. The reversal of 440021602 is 206120044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 440021602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4782798 + ... + 4782889.

It is an arithmetic number, because the mean of its divisors is an integer number (86091192).

Almost surely, 2^440021602 is an apocalyptic number.

440021602 is a deficient number, since it is larger than the sum of its proper divisors (248707934).

440021602 is a wasteful number, since it uses less digits than its factorization.

440021602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9565712.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 440021602 is about 20976.6918745545. The cubic root of 440021602 is about 760.6029391272.

Adding to 440021602 its reverse (206120044), we get a palindrome (646141646).

The spelling of 440021602 in words is "four hundred forty million, twenty-one thousand, six hundred two".