2239516440 has 192 divisors, whose sum is σ = 8680089600. Its totient is φ = 489620736.

The previous prime is 2239516381. The next prime is 2239516451. The reversal of 2239516440 is 446159322.

It is a happy number.

2239516440 is a `hidden beast` number, since 2 + 2 + 3 + 9 + 5 + 1 + 644 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2239516395 and 2239516404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38641 + ... + 77279.

It is an arithmetic number, because the mean of its divisors is an integer number (45208800).

Almost surely, 2^2239516440 is an apocalyptic number.

2239516440 is a gapful number since it is divisible by the number (20) 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 2239516440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4340044800).

2239516440 is an abundant number, since it is smaller than the sum of its proper divisors (6440573160).

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

2239516440 is a wasteful number, since it uses less digits than its factorization.

2239516440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38686 (or 38679 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 2239516440 is about 47323.5294541732. The cubic root of 2239516440 is about 1308.3323651076.

The spelling of 2239516440 in words is "two billion, two hundred thirty-nine million, five hundred sixteen thousand, four hundred forty".