38108989 has 2 divisors, whose sum is σ = 38108990. Its totient is φ = 38108988.

The previous prime is 38108981. The next prime is 38109011. The reversal of 38108989 is 98980183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34128964 + 3980025 = 5842^2 + 1995^2 .

It is a cyclic number.

It is not a de Polignac number, because 38108989 - 2³ = 38108981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38108981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19054494 + 19054495.

It is an arithmetic number, because the mean of its divisors is an integer number (19054495).

Almost surely, 2^38108989 is an apocalyptic number.

It is an amenable number.

38108989 is a deficient number, since it is larger than the sum of its proper divisors (1).

38108989 is an equidigital number, since it uses as much as digits as its factorization.

38108989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 38108989 is about 6173.2478485802. The cubic root of 38108989 is about 336.5186534718.

The spelling of 38108989 in words is "thirty-eight million, one hundred eight thousand, nine hundred eighty-nine".