38402849 has 2 divisors, whose sum is σ = 38402850. Its totient is φ = 38402848.

The previous prime is 38402843. The next prime is 38402879. The reversal of 38402849 is 94820483.

38402849 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., 27300625 + 11102224 = 5225^2 + 3332^2 .

It is an emirp because it is prime and its reverse (94820483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38402849 - 2²⁴ = 21625633 is a prime.

It is a super-2 number, since 2×38402849² = 2949557622633602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (38402843) 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, 19201424 + 19201425.

It is an arithmetic number, because the mean of its divisors is an integer number (19201425).

Almost surely, 2^38402849 is an apocalyptic number.

It is an amenable number.

38402849 is a deficient number, since it is larger than the sum of its proper divisors (1).

38402849 is an equidigital number, since it uses as much as digits as its factorization.

38402849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 38402849 is about 6197.0032273672. The cubic root of 38402849 is about 337.3814094549.

The spelling of 38402849 in words is "thirty-eight million, four hundred two thousand, eight hundred forty-nine".