39438223 has 4 divisors (see below), whose sum is σ = 43023528. Its totient is φ = 35852920.

The previous prime is 39438211. The next prime is 39438233. The reversal of 39438223 is 32283493.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39438223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39438233) 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, 1792636 + ... + 1792657.

It is an arithmetic number, because the mean of its divisors is an integer number (10755882).

Almost surely, 2^39438223 is an apocalyptic number.

39438223 is a deficient number, since it is larger than the sum of its proper divisors (3585305).

39438223 is a wasteful number, since it uses less digits than its factorization.

39438223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3585304.

The product of its digits is 31104, while the sum is 34.

The square root of 39438223 is about 6279.9859076275. The cubic root of 39438223 is about 340.3865931340.

The spelling of 39438223 in words is "thirty-nine million, four hundred thirty-eight thousand, two hundred twenty-three".