44931620909 has 4 divisors (see below), whose sum is σ = 51350423904. Its totient is φ = 38512817916.

The previous prime is 44931620879. The next prime is 44931620933. The reversal of 44931620909 is 90902613944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 44931620909 - 2²⁸ = 44663185453 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 (44931620009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3209401487 + ... + 3209401500.

It is an arithmetic number, because the mean of its divisors is an integer number (12837605976).

Almost surely, 2^44931620909 is an apocalyptic number.

It is an amenable number.

44931620909 is a deficient number, since it is larger than the sum of its proper divisors (6418802995).

44931620909 is an equidigital number, since it uses as much as digits as its factorization.

44931620909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6418802994.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 44931620909 in words is "forty-four billion, nine hundred thirty-one million, six hundred twenty thousand, nine hundred nine".