44990636647 has 4 divisors (see below), whose sum is σ = 49080694536. Its totient is φ = 40900578760.

The previous prime is 44990636609. The next prime is 44990636671. The reversal of 44990636647 is 74663609944.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 44990636647 - 2⁷ = 44990636519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44990636591 and 44990636600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44990636347) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2045028928 + ... + 2045028949.

It is an arithmetic number, because the mean of its divisors is an integer number (12270173634).

Almost surely, 2^44990636647 is an apocalyptic number.

44990636647 is a deficient number, since it is larger than the sum of its proper divisors (4090057889).

44990636647 is a wasteful number, since it uses less digits than its factorization.

44990636647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090057888.

The product of its (nonzero) digits is 23514624, while the sum is 58.

The spelling of 44990636647 in words is "forty-four billion, nine hundred ninety million, six hundred thirty-six thousand, six hundred forty-seven".