74322389 has 4 divisors (see below), whose sum is σ = 76885260. Its totient is φ = 71759520.

The previous prime is 74322383. The next prime is 74322397. The reversal of 74322389 is 98322347.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59752900 + 14569489 = 7730^2 + 3817^2 .

It is a cyclic number.

It is not a de Polignac number, because 74322389 - 2⁴ = 74322373 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74322383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1281392 + ... + 1281449.

It is an arithmetic number, because the mean of its divisors is an integer number (19221315).

Almost surely, 2^74322389 is an apocalyptic number.

It is an amenable number.

74322389 is a deficient number, since it is larger than the sum of its proper divisors (2562871).

74322389 is a wasteful number, since it uses less digits than its factorization.

74322389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562870.

The product of its digits is 72576, while the sum is 38.

The square root of 74322389 is about 8621.0433823291. The cubic root of 74322389 is about 420.4424456880.

It can be divided in two parts, 743 and 22389, that added together give a palindrome (23132).

The spelling of 74322389 in words is "seventy-four million, three hundred twenty-two thousand, three hundred eighty-nine".