74322291 has 4 divisors (see below), whose sum is σ = 99096392. Its totient is φ = 49548192.

The previous prime is 74322289. The next prime is 74322293. The reversal of 74322291 is 19222347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19222347 = 3 ⋅6407449.

It is an interprime number because it is at equal distance from previous prime (74322289) and next prime (74322293).

It is not a de Polignac number, because 74322291 - 2¹ = 74322289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74322293) 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, 12387046 + ... + 12387051.

It is an arithmetic number, because the mean of its divisors is an integer number (24774098).

Almost surely, 2^74322291 is an apocalyptic number.

74322291 is a deficient number, since it is larger than the sum of its proper divisors (24774101).

74322291 is a wasteful number, since it uses less digits than its factorization.

74322291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24774100.

The product of its digits is 6048, while the sum is 30.

The square root of 74322291 is about 8621.0376985604. The cubic root of 74322291 is about 420.4422608922.

The spelling of 74322291 in words is "seventy-four million, three hundred twenty-two thousand, two hundred ninety-one".