923389138 has 32 divisors (see below), whose sum is σ = 1622484864. Its totient is φ = 385886592.

The previous prime is 923389133. The next prime is 923389141. The reversal of 923389138 is 831983329.

923389138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (923389133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 563256 + ... + 564892.

It is an arithmetic number, because the mean of its divisors is an integer number (50702652).

Almost surely, 2^923389138 is an apocalyptic number.

923389138 is a deficient number, since it is larger than the sum of its proper divisors (699095726).

923389138 is a wasteful number, since it uses less digits than its factorization.

923389138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626.

The product of its digits is 279936, while the sum is 46.

The square root of 923389138 is about 30387.3187036961. The cubic root of 923389138 is about 973.7816517270.

The spelling of 923389138 in words is "nine hundred twenty-three million, three hundred eighty-nine thousand, one hundred thirty-eight".