4344887640 has 32 divisors (see below), whose sum is σ = 13034663280. Its totient is φ = 1158636672.

The previous prime is 4344887639. The next prime is 4344887647. The reversal of 4344887640 is 467884434.

It is a self number, because there is not a number n which added to its sum of digits gives 4344887640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4344887647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18103579 + ... + 18103818.

Almost surely, 2^4344887640 is an apocalyptic number.

4344887640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4344887640 is an abundant number, since it is smaller than the sum of its proper divisors (8689775640).

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

4344887640 is a wasteful number, since it uses less digits than its factorization.

4344887640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36207411 (or 36207407 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 48.

The square root of 4344887640 is about 65915.7616962741. The cubic root of 4344887640 is about 1631.7721501638.

The spelling of 4344887640 in words is "four billion, three hundred forty-four million, eight hundred eighty-seven thousand, six hundred forty".