38621879 has 2 divisors, whose sum is σ = 38621880. Its totient is φ = 38621878.

The previous prime is 38621873. The next prime is 38621887. The reversal of 38621879 is 97812683.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38621879 - 2²⁰ = 37573303 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 (38621873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19310939 + 19310940.

It is an arithmetic number, because the mean of its divisors is an integer number (19310940).

Almost surely, 2^38621879 is an apocalyptic number.

38621879 is a deficient number, since it is larger than the sum of its proper divisors (1).

38621879 is an equidigital number, since it uses as much as digits as its factorization.

38621879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 38621879 is about 6214.6503521920. The cubic root of 38621879 is about 338.0216102566.

The spelling of 38621879 in words is "thirty-eight million, six hundred twenty-one thousand, eight hundred seventy-nine".