74260393 has 4 divisors (see below), whose sum is σ = 74334148. Its totient is φ = 74186640.

The previous prime is 74260357. The next prime is 74260397. The reversal of 74260393 is 39306247.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57638464 + 16621929 = 7592^2 + 4077^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74260393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74260397) 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, 35346 + ... + 37387.

It is an arithmetic number, because the mean of its divisors is an integer number (18583537).

Almost surely, 2^74260393 is an apocalyptic number.

It is an amenable number.

74260393 is a deficient number, since it is larger than the sum of its proper divisors (73755).

74260393 is a wasteful number, since it uses less digits than its factorization.

74260393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73754.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 74260393 is about 8617.4470117315. The cubic root of 74260393 is about 420.3255091849.

The spelling of 74260393 in words is "seventy-four million, two hundred sixty thousand, three hundred ninety-three".