44720402789 has 2 divisors, whose sum is σ = 44720402790. Its totient is φ = 44720402788.

The previous prime is 44720402743. The next prime is 44720402803. The reversal of 44720402789 is 98720402744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44254274689 + 466128100 = 210367^2 + 21590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44720402789 is a prime.

It is a super-2 number, since 2×44720402789² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44720407789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22360201394 + 22360201395.

It is an arithmetic number, because the mean of its divisors is an integer number (22360201395).

Almost surely, 2^44720402789 is an apocalyptic number.

It is an amenable number.

44720402789 is a deficient number, since it is larger than the sum of its proper divisors (1).

44720402789 is an equidigital number, since it uses as much as digits as its factorization.

44720402789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 903168, while the sum is 47.

The spelling of 44720402789 in words is "forty-four billion, seven hundred twenty million, four hundred two thousand, seven hundred eighty-nine".