38216917 has 2 divisors, whose sum is σ = 38216918. Its totient is φ = 38216916.

The previous prime is 38216903. The next prime is 38216951. The reversal of 38216917 is 71961283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24740676 + 13476241 = 4974^2 + 3671^2 .

It is a cyclic number.

It is not a de Polignac number, because 38216917 - 2¹⁵ = 38184149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38216117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19108458 + 19108459.

It is an arithmetic number, because the mean of its divisors is an integer number (19108459).

Almost surely, 2^38216917 is an apocalyptic number.

It is an amenable number.

38216917 is a deficient number, since it is larger than the sum of its proper divisors (1).

38216917 is an equidigital number, since it uses as much as digits as its factorization.

38216917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 37.

The square root of 38216917 is about 6181.9832578227. The cubic root of 38216917 is about 336.8360374896.

The spelling of 38216917 in words is "thirty-eight million, two hundred sixteen thousand, nine hundred seventeen".