38140997 has 2 divisors, whose sum is σ = 38140998. Its totient is φ = 38140996.

The previous prime is 38140931. The next prime is 38141009. The reversal of 38140997 is 79904183.

It is a happy number.

38140997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33535681 + 4605316 = 5791^2 + 2146^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38140997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38143997) 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, 19070498 + 19070499.

It is an arithmetic number, because the mean of its divisors is an integer number (19070499).

Almost surely, 2^38140997 is an apocalyptic number.

It is an amenable number.

38140997 is a deficient number, since it is larger than the sum of its proper divisors (1).

38140997 is an equidigital number, since it uses as much as digits as its factorization.

38140997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 38140997 is about 6175.8397809529. The cubic root of 38140997 is about 336.6128418783.

The spelling of 38140997 in words is "thirty-eight million, one hundred forty thousand, nine hundred ninety-seven".