74223893 has 2 divisors, whose sum is σ = 74223894. Its totient is φ = 74223892.

The previous prime is 74223883. The next prime is 74223911. The reversal of 74223893 is 39832247.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72216004 + 2007889 = 8498^2 + 1417^2 .

It is a cyclic number.

It is not a de Polignac number, because 74223893 - 2¹⁸ = 73961749 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74223833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37111946 + 37111947.

It is an arithmetic number, because the mean of its divisors is an integer number (37111947).

Almost surely, 2^74223893 is an apocalyptic number.

It is an amenable number.

74223893 is a deficient number, since it is larger than the sum of its proper divisors (1).

74223893 is an equidigital number, since it uses as much as digits as its factorization.

74223893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 38.

The square root of 74223893 is about 8615.3289548339. The cubic root of 74223893 is about 420.2566326514.

The spelling of 74223893 in words is "seventy-four million, two hundred twenty-three thousand, eight hundred ninety-three".