44721739 has 2 divisors, whose sum is σ = 44721740. Its totient is φ = 44721738.

The previous prime is 44721737. The next prime is 44721749. The reversal of 44721739 is 93712744.

44721739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44721739 - 2¹ = 44721737 is a prime.

Together with 44721737, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 44721698 and 44721707.

It is not a weakly prime, because it can be changed into another prime (44721731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22360869 + 22360870.

It is an arithmetic number, because the mean of its divisors is an integer number (22360870).

Almost surely, 2^44721739 is an apocalyptic number.

44721739 is a deficient number, since it is larger than the sum of its proper divisors (1).

44721739 is an equidigital number, since it uses as much as digits as its factorization.

44721739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 44721739 is about 6687.4314202091. The cubic root of 44721739 is about 354.9546698716.

The spelling of 44721739 in words is "forty-four million, seven hundred twenty-one thousand, seven hundred thirty-nine".