44464021997 has 2 divisors, whose sum is σ = 44464021998. Its totient is φ = 44464021996.

The previous prime is 44464021991. The next prime is 44464021999. The reversal of 44464021997 is 79912046444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43642970281 + 821051716 = 208909^2 + 28654^2 .

It is a cyclic number.

It is not a de Polignac number, because 44464021997 - 2⁶ = 44464021933 is a prime.

Together with 44464021999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44464021991) 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, 22232010998 + 22232010999.

It is an arithmetic number, because the mean of its divisors is an integer number (22232010999).

Almost surely, 2^44464021997 is an apocalyptic number.

It is an amenable number.

44464021997 is a deficient number, since it is larger than the sum of its proper divisors (1).

44464021997 is an equidigital number, since it uses as much as digits as its factorization.

44464021997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 44464021997 in words is "forty-four billion, four hundred sixty-four million, twenty-one thousand, nine hundred ninety-seven".