4406421994 has 16 divisors (see below), whose sum is σ = 7363518120. Its totient is φ = 1963604160.

The previous prime is 4406421991. The next prime is 4406422037. The reversal of 4406421994 is 4991246044.

It can be written as a sum of positive squares in 4 ways, for example, as 4068781369 + 337640625 = 63787^2 + 18375^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4406421994.

It is not an unprimeable number, because it can be changed into a prime (4406421991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2921277 + ... + 2922784.

Almost surely, 2^4406421994 is an apocalyptic number.

4406421994 is a deficient number, since it is larger than the sum of its proper divisors (2957096126).

4406421994 is a wasteful number, since it uses less digits than its factorization.

4406421994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5844105.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 4406421994 is about 66380.8857578746. The cubic root of 4406421994 is about 1639.4393773338.

The spelling of 4406421994 in words is "four billion, four hundred six million, four hundred twenty-one thousand, nine hundred ninety-four".