38440949 has 2 divisors, whose sum is σ = 38440950. Its totient is φ = 38440948.

The previous prime is 38440937. The next prime is 38440991. The reversal of 38440949 is 94904483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19864849 + 18576100 = 4457^2 + 4310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38440949 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 (38440849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19220474 + 19220475.

It is an arithmetic number, because the mean of its divisors is an integer number (19220475).

Almost surely, 2^38440949 is an apocalyptic number.

It is an amenable number.

38440949 is a deficient number, since it is larger than the sum of its proper divisors (1).

38440949 is an equidigital number, since it uses as much as digits as its factorization.

38440949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 38440949 is about 6200.0765317857. The cubic root of 38440949 is about 337.4929461717.

The spelling of 38440949 in words is "thirty-eight million, four hundred forty thousand, nine hundred forty-nine".