38959621 has 2 divisors, whose sum is σ = 38959622. Its totient is φ = 38959620.

The previous prime is 38959601. The next prime is 38959637. The reversal of 38959621 is 12695983.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31203396 + 7756225 = 5586^2 + 2785^2 .

It is a cyclic number.

It is not a de Polignac number, because 38959621 - 2¹⁹ = 38435333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38959601) 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, 19479810 + 19479811.

It is an arithmetic number, because the mean of its divisors is an integer number (19479811).

Almost surely, 2^38959621 is an apocalyptic number.

It is an amenable number.

38959621 is a deficient number, since it is larger than the sum of its proper divisors (1).

38959621 is an equidigital number, since it uses as much as digits as its factorization.

38959621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 43.

The square root of 38959621 is about 6241.7642537988. The cubic root of 38959621 is about 339.0040665129.

The spelling of 38959621 in words is "thirty-eight million, nine hundred fifty-nine thousand, six hundred twenty-one".