38923933 has 4 divisors (see below), whose sum is σ = 38955420. Its totient is φ = 38892448.

The previous prime is 38923921. The next prime is 38923939. The reversal of 38923933 is 33932983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33932983 = 7 ⋅4847569.

It can be written as a sum of positive squares in 2 ways, for example, as 21132409 + 17791524 = 4597^2 + 4218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38923933 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38923939) 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, 13810 + ... + 16387.

It is an arithmetic number, because the mean of its divisors is an integer number (9738855).

Almost surely, 2^38923933 is an apocalyptic number.

It is an amenable number.

38923933 is a deficient number, since it is larger than the sum of its proper divisors (31487).

38923933 is a wasteful number, since it uses less digits than its factorization.

38923933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31486.

The product of its digits is 104976, while the sum is 40.

The square root of 38923933 is about 6238.9047917082. The cubic root of 38923933 is about 338.9005227853.

The spelling of 38923933 in words is "thirty-eight million, nine hundred twenty-three thousand, nine hundred thirty-three".