4394420009 has 12 divisors (see below), whose sum is σ = 5162494788. Its totient is φ = 3729348000.

The previous prime is 4394419961. The next prime is 4394420011. The reversal of 4394420009 is 9000244934.

It can be written as a sum of positive squares in 2 ways, for example, as 3171379225 + 1223040784 = 56315^2 + 34972^2 .

It is not a de Polignac number, because 4394420009 - 2⁸ = 4394419753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4394420059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 439022 + ... + 448919.

It is an arithmetic number, because the mean of its divisors is an integer number (430207899).

Almost surely, 2^4394420009 is an apocalyptic number.

4394420009 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

4394420009 is a deficient number, since it is larger than the sum of its proper divisors (768074779).

4394420009 is a wasteful number, since it uses less digits than its factorization.

4394420009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888056 (or 888049 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 4394420009 is about 66290.4216987643. The cubic root of 4394420009 is about 1637.9495503979.

The spelling of 4394420009 in words is "four billion, three hundred ninety-four million, four hundred twenty thousand, nine".