38820869 has 2 divisors, whose sum is σ = 38820870. Its totient is φ = 38820868.

The previous prime is 38820853. The next prime is 38820917. The reversal of 38820869 is 96802883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31192225 + 7628644 = 5585^2 + 2762^2 .

It is a cyclic number.

It is not a de Polignac number, because 38820869 - 2⁴ = 38820853 is a prime.

It is a super-2 number, since 2×38820869² = 3014119739830322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38825869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19410434 + 19410435.

It is an arithmetic number, because the mean of its divisors is an integer number (19410435).

Almost surely, 2^38820869 is an apocalyptic number.

It is an amenable number.

38820869 is a deficient number, since it is larger than the sum of its proper divisors (1).

38820869 is an equidigital number, since it uses as much as digits as its factorization.

38820869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 38820869 is about 6230.6395337878. The cubic root of 38820869 is about 338.6011412787.

The spelling of 38820869 in words is "thirty-eight million, eight hundred twenty thousand, eight hundred sixty-nine".