4089499640 has 64 divisors (see below), whose sum is σ = 9403430400. Its totient is φ = 1600267392.

The previous prime is 4089499621. The next prime is 4089499681. The reversal of 4089499640 is 469949804.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335981 + ... + 347939.

It is an arithmetic number, because the mean of its divisors is an integer number (146928600).

Almost surely, 2^4089499640 is an apocalyptic number.

4089499640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4089499640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4701715200).

4089499640 is an abundant number, since it is smaller than the sum of its proper divisors (5313930760).

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

4089499640 is a wasteful number, since it uses less digits than its factorization.

4089499640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12156 (or 12152 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 53.

The square root of 4089499640 is about 63949.1957728946. The cubic root of 4089499640 is about 1599.1531508164.

The spelling of 4089499640 in words is "four billion, eighty-nine million, four hundred ninety-nine thousand, six hundred forty".