748136393 has 4 divisors (see below), whose sum is σ = 762252228. Its totient is φ = 734020560.

The previous prime is 748136371. The next prime is 748136401. The reversal of 748136393 is 393631847.

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 537683344 + 210453049 = 23188^2 + 14507^2 .

It is a cyclic number.

It is not a de Polignac number, because 748136393 - 2⁶ = 748136329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (748136303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7057838 + ... + 7057943.

It is an arithmetic number, because the mean of its divisors is an integer number (190563057).

Almost surely, 2^748136393 is an apocalyptic number.

It is an amenable number.

748136393 is a deficient number, since it is larger than the sum of its proper divisors (14115835).

748136393 is a wasteful number, since it uses less digits than its factorization.

748136393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14115834.

The product of its digits is 326592, while the sum is 44.

The square root of 748136393 is about 27352.0820596897. The cubic root of 748136393 is about 907.8071392190.

The spelling of 748136393 in words is "seven hundred forty-eight million, one hundred thirty-six thousand, three hundred ninety-three".