74140393 has 4 divisors (see below), whose sum is σ = 74293120. Its totient is φ = 73987668.

The previous prime is 74140373. The next prime is 74140399. The reversal of 74140393 is 39304147.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39304147 = 5431 ⋅7237.

It is a cyclic number.

It is not a de Polignac number, because 74140393 - 2²¹ = 72043241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74140399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75633 + ... + 76606.

It is an arithmetic number, because the mean of its divisors is an integer number (18573280).

Almost surely, 2^74140393 is an apocalyptic number.

It is an amenable number.

74140393 is a deficient number, since it is larger than the sum of its proper divisors (152727).

74140393 is a wasteful number, since it uses less digits than its factorization.

74140393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152726.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 74140393 is about 8610.4815777052. The cubic root of 74140393 is about 420.0989808287.

The spelling of 74140393 in words is "seventy-four million, one hundred forty thousand, three hundred ninety-three".