747923 has 4 divisors (see below), whose sum is σ = 815928. Its totient is φ = 679920.

The previous prime is 747919. The next prime is 747941. The reversal of 747923 is 329747.

It is a happy number.

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 747923 - 2² = 747919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 747923.

It is not an unprimeable number, because it can be changed into a prime (747953) 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, 33986 + ... + 34007.

It is an arithmetic number, because the mean of its divisors is an integer number (203982).

2⁷⁴⁷⁹²³ is an apocalyptic number.

747923 is a deficient number, since it is larger than the sum of its proper divisors (68005).

747923 is a wasteful number, since it uses less digits than its factorization.

747923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68004.

The product of its digits is 10584, while the sum is 32.

The square root of 747923 is about 864.8254159077. The cubic root of 747923 is about 90.7720818903.

It can be divided in two parts, 74 and 7923, that added together give a palindrome (7997).

The spelling of 747923 in words is "seven hundred forty-seven thousand, nine hundred twenty-three".