74444289 has 8 divisors (see below), whose sum is σ = 99313632. Its totient is φ = 49602240.

The previous prime is 74444273. The next prime is 74444297. The reversal of 74444289 is 98244447.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74444289 - 2⁴ = 74444273 is a prime.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 74444289.

It is not an unprimeable number, because it can be changed into a prime (74444239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742 + ... + 12224.

It is an arithmetic number, because the mean of its divisors is an integer number (12414204).

Almost surely, 2^74444289 is an apocalyptic number.

It is an amenable number.

74444289 is a deficient number, since it is larger than the sum of its proper divisors (24869343).

74444289 is a wasteful number, since it uses less digits than its factorization.

74444289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13647.

The product of its digits is 258048, while the sum is 42.

The square root of 74444289 is about 8628.1103956776. The cubic root of 74444289 is about 420.6721832767.

The spelling of 74444289 in words is "seventy-four million, four hundred forty-four thousand, two hundred eighty-nine".