38689811 has 2 divisors, whose sum is σ = 38689812. Its totient is φ = 38689810.

The previous prime is 38689793. The next prime is 38689823. The reversal of 38689811 is 11898683.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (11898683) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38689811 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38689411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19344905 + 19344906.

It is an arithmetic number, because the mean of its divisors is an integer number (19344906).

Almost surely, 2^38689811 is an apocalyptic number.

38689811 is a deficient number, since it is larger than the sum of its proper divisors (1).

38689811 is an equidigital number, since it uses as much as digits as its factorization.

38689811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 44.

The square root of 38689811 is about 6220.1134234031. The cubic root of 38689811 is about 338.2196761790.

The spelling of 38689811 in words is "thirty-eight million, six hundred eighty-nine thousand, eight hundred eleven".