74268389 has 4 divisors (see below), whose sum is σ = 79981356. Its totient is φ = 68555424.

The previous prime is 74268377. The next prime is 74268401. The reversal of 74268389 is 98386247.

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

It is an interprime number because it is at equal distance from previous prime (74268377) and next prime (74268401).

It can be written as a sum of positive squares in 2 ways, for example, as 24453025 + 49815364 = 4945^2 + 7058^2 .

It is a cyclic number.

It is not a de Polignac number, because 74268389 - 2⁴ = 74268373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74268329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2856464 + ... + 2856489.

It is an arithmetic number, because the mean of its divisors is an integer number (19995339).

Almost surely, 2^74268389 is an apocalyptic number.

It is an amenable number.

74268389 is a deficient number, since it is larger than the sum of its proper divisors (5712967).

74268389 is a wasteful number, since it uses less digits than its factorization.

74268389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5712966.

The product of its digits is 580608, while the sum is 47.

The square root of 74268389 is about 8617.9109417538. The cubic root of 74268389 is about 420.3405948495.

The spelling of 74268389 in words is "seventy-four million, two hundred sixty-eight thousand, three hundred eighty-nine".