2239597836 has 144 divisors (see below), whose sum is σ = 6778087680. Its totient is φ = 633355200.

The previous prime is 2239597823. The next prime is 2239597861. The reversal of 2239597836 is 6387959322.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 685575 + ... + 688833.

Almost surely, 2^2239597836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2239597836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3389043840).

2239597836 is an abundant number, since it is smaller than the sum of its proper divisors (4538489844).

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

2239597836 is a wasteful number, since it uses less digits than its factorization.

2239597836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3386 (or 3372 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 2239597836 is about 47324.3894413864. The cubic root of 2239597836 is about 1308.3482155131.

The spelling of 2239597836 in words is "two billion, two hundred thirty-nine million, five hundred ninety-seven thousand, eight hundred thirty-six".