74934221 has 4 divisors (see below), whose sum is σ = 74990172. Its totient is φ = 74878272.

The previous prime is 74934217. The next prime is 74934239. The reversal of 74934221 is 12243947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12243947 = 1249 ⋅9803.

It can be written as a sum of positive squares in 2 ways, for example, as 61058596 + 13875625 = 7814^2 + 3725^2 .

It is a cyclic number.

It is not a de Polignac number, because 74934221 - 2² = 74934217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74934241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25916 + ... + 28661.

It is an arithmetic number, because the mean of its divisors is an integer number (18747543).

Almost surely, 2^74934221 is an apocalyptic number.

It is an amenable number.

74934221 is a deficient number, since it is larger than the sum of its proper divisors (55951).

74934221 is a wasteful number, since it uses less digits than its factorization.

74934221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55950.

The product of its digits is 12096, while the sum is 32.

The square root of 74934221 is about 8656.4554524355. The cubic root of 74934221 is about 421.5930073511.

The spelling of 74934221 in words is "seventy-four million, nine hundred thirty-four thousand, two hundred twenty-one".