44977589989 has 2 divisors, whose sum is σ = 44977589990. Its totient is φ = 44977589988.

The previous prime is 44977589981. The next prime is 44977590019. The reversal of 44977589989 is 98998577944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39663908964 + 5313681025 = 199158^2 + 72895^2 .

It is a cyclic number.

It is not a de Polignac number, because 44977589989 - 2³ = 44977589981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44977589981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22488794994 + 22488794995.

It is an arithmetic number, because the mean of its divisors is an integer number (22488794995).

Almost surely, 2^44977589989 is an apocalyptic number.

It is an amenable number.

44977589989 is a deficient number, since it is larger than the sum of its proper divisors (1).

44977589989 is an equidigital number, since it uses as much as digits as its factorization.

44977589989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1646023680, while the sum is 79.

The spelling of 44977589989 in words is "forty-four billion, nine hundred seventy-seven million, five hundred eighty-nine thousand, nine hundred eighty-nine".