74457289 has 8 divisors (see below), whose sum is σ = 75045320. Its totient is φ = 73872000.

The previous prime is 74457217. The next prime is 74457293. The reversal of 74457289 is 98275447.

It can be written as a sum of positive squares in 4 ways, for example, as 37454400 + 37002889 = 6120^2 + 6083^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74457289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74457389) 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, 123589 + ... + 124189.

It is an arithmetic number, because the mean of its divisors is an integer number (9380665).

Almost surely, 2^74457289 is an apocalyptic number.

It is an amenable number.

74457289 is a deficient number, since it is larger than the sum of its proper divisors (588031).

74457289 is a wasteful number, since it uses less digits than its factorization.

74457289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371.

The product of its digits is 564480, while the sum is 46.

The square root of 74457289 is about 8628.8637143021. The cubic root of 74457289 is about 420.6966687909.

The spelling of 74457289 in words is "seventy-four million, four hundred fifty-seven thousand, two hundred eighty-nine".