38415989 has 2 divisors, whose sum is σ = 38415990. Its totient is φ = 38415988.

The previous prime is 38415961. The next prime is 38416051. The reversal of 38415989 is 98951483.

38415989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33443089 + 4972900 = 5783^2 + 2230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38415989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38415389) 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, 19207994 + 19207995.

It is an arithmetic number, because the mean of its divisors is an integer number (19207995).

Almost surely, 2^38415989 is an apocalyptic number.

It is an amenable number.

38415989 is a deficient number, since it is larger than the sum of its proper divisors (1).

38415989 is an equidigital number, since it uses as much as digits as its factorization.

38415989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 47.

The square root of 38415989 is about 6198.0633265561. The cubic root of 38415989 is about 337.4198847790.

The spelling of 38415989 in words is "thirty-eight million, four hundred fifteen thousand, nine hundred eighty-nine".