74223491 has 2 divisors, whose sum is σ = 74223492. Its totient is φ = 74223490.

The previous prime is 74223473. The next prime is 74223503. The reversal of 74223491 is 19432247.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74223491 - 2⁶ = 74223427 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74223431) 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 as a sum of consecutive naturals, namely, 37111745 + 37111746.

It is an arithmetic number, because the mean of its divisors is an integer number (37111746).

Almost surely, 2^74223491 is an apocalyptic number.

74223491 is a deficient number, since it is larger than the sum of its proper divisors (1).

74223491 is an equidigital number, since it uses as much as digits as its factorization.

74223491 is an odious number, because the sum of its binary digits is odd.

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

The square root of 74223491 is about 8615.3056242945. The cubic root of 74223491 is about 420.2558739403.

The spelling of 74223491 in words is "seventy-four million, two hundred twenty-three thousand, four hundred ninety-one".