74540443 has 2 divisors, whose sum is σ = 74540444. Its totient is φ = 74540442.

The previous prime is 74540429. The next prime is 74540483. The reversal of 74540443 is 34404547.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74540443 - 2⁹ = 74539931 is a prime.

It is not a weakly prime, because it can be changed into another prime (74540483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37270221 + 37270222.

It is an arithmetic number, because the mean of its divisors is an integer number (37270222).

Almost surely, 2^74540443 is an apocalyptic number.

74540443 is a deficient number, since it is larger than the sum of its proper divisors (1).

74540443 is an equidigital number, since it uses as much as digits as its factorization.

74540443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 31.

The square root of 74540443 is about 8633.6807330362. The cubic root of 74540443 is about 420.8532220600.

The spelling of 74540443 in words is "seventy-four million, five hundred forty thousand, four hundred forty-three".