38704021 has 2 divisors, whose sum is σ = 38704022. Its totient is φ = 38704020.

The previous prime is 38704013. The next prime is 38704031. The reversal of 38704021 is 12040783.

38704021 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., 23415921 + 15288100 = 4839^2 + 3910^2 .

It is a cyclic number.

It is not a de Polignac number, because 38704021 - 2³ = 38704013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38704031) 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, 19352010 + 19352011.

It is an arithmetic number, because the mean of its divisors is an integer number (19352011).

Almost surely, 2^38704021 is an apocalyptic number.

It is an amenable number.

38704021 is a deficient number, since it is larger than the sum of its proper divisors (1).

38704021 is an equidigital number, since it uses as much as digits as its factorization.

38704021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 38704021 is about 6221.2555806686. The cubic root of 38704021 is about 338.2610782363.

The spelling of 38704021 in words is "thirty-eight million, seven hundred four thousand, twenty-one".