738823 has 4 divisors (see below), whose sum is σ = 762688. Its totient is φ = 714960.

The previous prime is 738811. The next prime is 738827. The reversal of 738823 is 328837.

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

It is a cyclic number.

It is not a de Polignac number, because 738823 - 2⁵ = 738791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 23833 = 738823 / (7 + 3 + 8 + 8 + 2 + 3).

It is an Ulam number.

It is a Duffinian number.

738823 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (738827) 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, 11886 + ... + 11947.

It is an arithmetic number, because the mean of its divisors is an integer number (190672).

2⁷³⁸⁸²³ is an apocalyptic number.

738823 is a deficient number, since it is larger than the sum of its proper divisors (23865).

738823 is a wasteful number, since it uses less digits than its factorization.

738823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23864.

The product of its digits is 8064, while the sum is 31.

The square root of 738823 is about 859.5481371046. The cubic root of 738823 is about 90.4024364994.

The spelling of 738823 in words is "seven hundred thirty-eight thousand, eight hundred twenty-three".