38791243 has 2 divisors, whose sum is σ = 38791244. Its totient is φ = 38791242.

The previous prime is 38791231. The next prime is 38791279. The reversal of 38791243 is 34219783.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38791243 - 2²⁵ = 5236811 is a prime.

It is not a weakly prime, because it can be changed into another prime (38791213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19395621 + 19395622.

It is an arithmetic number, because the mean of its divisors is an integer number (19395622).

Almost surely, 2^38791243 is an apocalyptic number.

38791243 is a deficient number, since it is larger than the sum of its proper divisors (1).

38791243 is an equidigital number, since it uses as much as digits as its factorization.

38791243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 38791243 is about 6228.2616354806. The cubic root of 38791243 is about 338.5149852965.

The spelling of 38791243 in words is "thirty-eight million, seven hundred ninety-one thousand, two hundred forty-three".