38521669 has 2 divisors, whose sum is σ = 38521670. Its totient is φ = 38521668.

The previous prime is 38521667. The next prime is 38521697. The reversal of 38521669 is 96612583.

38521669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28037025 + 10484644 = 5295^2 + 3238^2 .

It is a cyclic number.

It is not a de Polignac number, because 38521669 - 2¹ = 38521667 is a prime.

It is a super-2 number, since 2×38521669² = 2967837965091122, which contains 22 as substring.

Together with 38521667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38521663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19260834 + 19260835.

It is an arithmetic number, because the mean of its divisors is an integer number (19260835).

Almost surely, 2^38521669 is an apocalyptic number.

It is an amenable number.

38521669 is a deficient number, since it is larger than the sum of its proper divisors (1).

38521669 is an equidigital number, since it uses as much as digits as its factorization.

38521669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 38521669 is about 6206.5827151501. The cubic root of 38521669 is about 337.7290085414.

The spelling of 38521669 in words is "thirty-eight million, five hundred twenty-one thousand, six hundred sixty-nine".