74444067389 has 2 divisors, whose sum is σ = 74444067390. Its totient is φ = 74444067388.

The previous prime is 74444067331. The next prime is 74444067427. The reversal of 74444067389 is 98376044447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52143722500 + 22300344889 = 228350^2 + 149333^2 .

It is a cyclic number.

It is not a de Polignac number, because 74444067389 - 2³² = 70149100093 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74444067589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37222033694 + 37222033695.

It is an arithmetic number, because the mean of its divisors is an integer number (37222033695).

Almost surely, 2^74444067389 is an apocalyptic number.

It is an amenable number.

74444067389 is a deficient number, since it is larger than the sum of its proper divisors (1).

74444067389 is an equidigital number, since it uses as much as digits as its factorization.

74444067389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16257024, while the sum is 56.

The spelling of 74444067389 in words is "seventy-four billion, four hundred forty-four million, sixty-seven thousand, three hundred eighty-nine".