4004399989 has 16 divisors (see below), whose sum is σ = 4104031680. Its totient is φ = 3906322560.

The previous prime is 4004399957. The next prime is 4004400007. The reversal of 4004399989 is 9899934004.

It is a cyclic number.

It is not a de Polignac number, because 4004399989 - 2⁵ = 4004399957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4004399939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2398447 + ... + 2400115.

It is an arithmetic number, because the mean of its divisors is an integer number (256501980).

Almost surely, 2^4004399989 is an apocalyptic number.

It is an amenable number.

4004399989 is a deficient number, since it is larger than the sum of its proper divisors (99631691).

4004399989 is a wasteful number, since it uses less digits than its factorization.

4004399989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The square root of 4004399989 is about 63280.3286100823. The cubic root of 4004399989 is about 1587.9828842796.

The spelling of 4004399989 in words is "four billion, four million, three hundred ninety-nine thousand, nine hundred eighty-nine".