5644440247 has 8 divisors (see below), whose sum is σ = 5704097040. Its totient is φ = 5584857600.

The previous prime is 5644440233. The next prime is 5644440301. The reversal of 5644440247 is 7420444465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5644440247 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 (5644440047) 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, 141783 + ... + 177175.

It is an arithmetic number, because the mean of its divisors is an integer number (713012130).

Almost surely, 2^5644440247 is an apocalyptic number.

5644440247 is a deficient number, since it is larger than the sum of its proper divisors (59656793).

5644440247 is a wasteful number, since it uses less digits than its factorization.

5644440247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37073.

The product of its (nonzero) digits is 430080, while the sum is 40.

The square root of 5644440247 is about 75129.4898625034. The cubic root of 5644440247 is about 1780.4930930973.

The spelling of 5644440247 in words is "five billion, six hundred forty-four million, four hundred forty thousand, two hundred forty-seven".