38039621 has 2 divisors, whose sum is σ = 38039622. Its totient is φ = 38039620.

The previous prime is 38039611. The next prime is 38039627. The reversal of 38039621 is 12693083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24453025 + 13586596 = 4945^2 + 3686^2 .

It is a cyclic number.

It is not a de Polignac number, because 38039621 - 2¹⁰ = 38038597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38039627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19019810 + 19019811.

It is an arithmetic number, because the mean of its divisors is an integer number (19019811).

Almost surely, 2^38039621 is an apocalyptic number.

It is an amenable number.

38039621 is a deficient number, since it is larger than the sum of its proper divisors (1).

38039621 is an equidigital number, since it uses as much as digits as its factorization.

38039621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 38039621 is about 6167.6268531746. The cubic root of 38039621 is about 336.3143464331.

The spelling of 38039621 in words is "thirty-eight million, thirty-nine thousand, six hundred twenty-one".