38689493 has 2 divisors, whose sum is σ = 38689494. Its totient is φ = 38689492.

The previous prime is 38689487. The next prime is 38689499. The reversal of 38689493 is 39498683.

It is a balanced prime because it is at equal distance from previous prime (38689487) and next prime (38689499).

It can be written as a sum of positive squares in only one way, i.e., 28494244 + 10195249 = 5338^2 + 3193^2 .

It is a cyclic number.

It is not a de Polignac number, because 38689493 - 2⁴ = 38689477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38689499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19344746 + 19344747.

It is an arithmetic number, because the mean of its divisors is an integer number (19344747).

Almost surely, 2^38689493 is an apocalyptic number.

It is an amenable number.

38689493 is a deficient number, since it is larger than the sum of its proper divisors (1).

38689493 is an equidigital number, since it uses as much as digits as its factorization.

38689493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 50.

The square root of 38689493 is about 6220.0878611158. The cubic root of 38689493 is about 338.2187495426.

The spelling of 38689493 in words is "thirty-eight million, six hundred eighty-nine thousand, four hundred ninety-three".