74074393 has 4 divisors (see below), whose sum is σ = 74615220. Its totient is φ = 73533568.

The previous prime is 74074391. The next prime is 74074411. The reversal of 74074393 is 39347047.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39347047 = 181 ⋅217387.

It can be written as a sum of positive squares in 2 ways, for example, as 26904969 + 47169424 = 5187^2 + 6868^2 .

It is a cyclic number.

It is not a de Polignac number, because 74074393 - 2¹ = 74074391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74074391) 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 in 3 ways as a sum of consecutive naturals, for example, 270208 + ... + 270481.

It is an arithmetic number, because the mean of its divisors is an integer number (18653805).

Almost surely, 2^74074393 is an apocalyptic number.

It is an amenable number.

74074393 is a deficient number, since it is larger than the sum of its proper divisors (540827).

74074393 is a wasteful number, since it uses less digits than its factorization.

74074393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540826.

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 74074393 is about 8606.6481861408. The cubic root of 74074393 is about 419.9742860297.

The spelling of 74074393 in words is "seventy-four million, seventy-four thousand, three hundred ninety-three".