38865121 has 2 divisors, whose sum is σ = 38865122. Its totient is φ = 38865120.

The previous prime is 38865097. The next prime is 38865131. The reversal of 38865121 is 12156883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35236096 + 3629025 = 5936^2 + 1905^2 .

It is a cyclic number.

It is not a de Polignac number, because 38865121 - 2¹³ = 38856929 is a prime.

It is not a weakly prime, because it can be changed into another prime (38865131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19432560 + 19432561.

It is an arithmetic number, because the mean of its divisors is an integer number (19432561).

Almost surely, 2^38865121 is an apocalyptic number.

It is an amenable number.

38865121 is a deficient number, since it is larger than the sum of its proper divisors (1).

38865121 is an equidigital number, since it uses as much as digits as its factorization.

38865121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 34.

The square root of 38865121 is about 6234.1896827094. The cubic root of 38865121 is about 338.7297498368.

The spelling of 38865121 in words is "thirty-eight million, eight hundred sixty-five thousand, one hundred twenty-one".