38139677 has 2 divisors, whose sum is σ = 38139678. Its totient is φ = 38139676.

The previous prime is 38139649. The next prime is 38139697. The reversal of 38139677 is 77693183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37810201 + 329476 = 6149^2 + 574^2 .

It is a cyclic number.

It is not a de Polignac number, because 38139677 - 2⁶ = 38139613 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 (38139617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19069838 + 19069839.

It is an arithmetic number, because the mean of its divisors is an integer number (19069839).

Almost surely, 2^38139677 is an apocalyptic number.

It is an amenable number.

38139677 is a deficient number, since it is larger than the sum of its proper divisors (1).

38139677 is an equidigital number, since it uses as much as digits as its factorization.

38139677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 44.

The square root of 38139677 is about 6175.7329119709. The cubic root of 38139677 is about 336.6089586195.

The spelling of 38139677 in words is "thirty-eight million, one hundred thirty-nine thousand, six hundred seventy-seven".