38623939 has 4 divisors (see below), whose sum is σ = 38671360. Its totient is φ = 38576520.

The previous prime is 38623931. The next prime is 38623951. The reversal of 38623939 is 93932683.

It is a happy number.

38623939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 38623939 - 2³ = 38623931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38623895 and 38623904.

It is not an unprimeable number, because it can be changed into a prime (38623931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22467 + ... + 24124.

It is an arithmetic number, because the mean of its divisors is an integer number (9667840).

Almost surely, 2^38623939 is an apocalyptic number.

38623939 is a deficient number, since it is larger than the sum of its proper divisors (47421).

38623939 is an equidigital number, since it uses as much as digits as its factorization.

38623939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47420.

The product of its digits is 209952, while the sum is 43.

The square root of 38623939 is about 6214.8160873834. The cubic root of 38623939 is about 338.0276199084.

The spelling of 38623939 in words is "thirty-eight million, six hundred twenty-three thousand, nine hundred thirty-nine".