1444602989 has 2 divisors, whose sum is σ = 1444602990. Its totient is φ = 1444602988.

The previous prime is 1444602983. The next prime is 1444603009. The reversal of 1444602989 is 9892064441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1203049225 + 241553764 = 34685^2 + 15542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1444602989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1444602983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722301494 + 722301495.

It is an arithmetic number, because the mean of its divisors is an integer number (722301495).

Almost surely, 2^1444602989 is an apocalyptic number.

It is an amenable number.

1444602989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444602989 is an equidigital number, since it uses as much as digits as its factorization.

1444602989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 1444602989 is about 38007.9332376808. The cubic root of 1444602989 is about 1130.4451711412.

The spelling of 1444602989 in words is "one billion, four hundred forty-four million, six hundred two thousand, nine hundred eighty-nine".