74470289 has 4 divisors (see below), whose sum is σ = 77038260. Its totient is φ = 71902320.

The previous prime is 74470283. The next prime is 74470313. The reversal of 74470289 is 98207447.

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 51955264 + 22515025 = 7208^2 + 4745^2 .

It is a cyclic number.

It is not a de Polignac number, because 74470289 - 2¹⁶ = 74404753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74470283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1283942 + ... + 1283999.

It is an arithmetic number, because the mean of its divisors is an integer number (19259565).

Almost surely, 2^74470289 is an apocalyptic number.

It is an amenable number.

74470289 is a deficient number, since it is larger than the sum of its proper divisors (2567971).

74470289 is a wasteful number, since it uses less digits than its factorization.

74470289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567970.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 74470289 is about 8629.6169671660. The cubic root of 74470289 is about 420.7211514552.

The spelling of 74470289 in words is "seventy-four million, four hundred seventy thousand, two hundred eighty-nine".