38490217 has 2 divisors, whose sum is σ = 38490218. Its totient is φ = 38490216.

The previous prime is 38490211. The next prime is 38490223. The reversal of 38490217 is 71209483.

It is a balanced prime because it is at equal distance from previous prime (38490211) and next prime (38490223).

It can be written as a sum of positive squares in only one way, i.e., 24019801 + 14470416 = 4901^2 + 3804^2 .

It is an emirp because it is prime and its reverse (71209483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38490217 - 2³ = 38490209 is a prime.

It is not a weakly prime, because it can be changed into another prime (38490211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19245108 + 19245109.

It is an arithmetic number, because the mean of its divisors is an integer number (19245109).

Almost surely, 2^38490217 is an apocalyptic number.

It is an amenable number.

38490217 is a deficient number, since it is larger than the sum of its proper divisors (1).

38490217 is an equidigital number, since it uses as much as digits as its factorization.

38490217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 38490217 is about 6204.0484363035. The cubic root of 38490217 is about 337.6370676910.

It can be divided in two parts, 384 and 90217, that added together give a square (90601 = 301²).

The spelling of 38490217 in words is "thirty-eight million, four hundred ninety thousand, two hundred seventeen".