38611939 has 2 divisors, whose sum is σ = 38611940. Its totient is φ = 38611938.

The previous prime is 38611927. The next prime is 38611949. The reversal of 38611939 is 93911683.

It is a strong prime.

It is an emirp because it is prime and its reverse (93911683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38611939 - 2⁵ = 38611907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38611949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19305969 + 19305970.

It is an arithmetic number, because the mean of its divisors is an integer number (19305970).

Almost surely, 2^38611939 is an apocalyptic number.

38611939 is a deficient number, since it is larger than the sum of its proper divisors (1).

38611939 is an equidigital number, since it uses as much as digits as its factorization.

38611939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 40.

The square root of 38611939 is about 6213.8505775405. The cubic root of 38611939 is about 337.9926092242.

The spelling of 38611939 in words is "thirty-eight million, six hundred eleven thousand, nine hundred thirty-nine".