38977139 has 2 divisors, whose sum is σ = 38977140. Its totient is φ = 38977138.

The previous prime is 38977123. The next prime is 38977223. The reversal of 38977139 is 93177983.

It is a weak prime.

It is an emirp because it is prime and its reverse (93177983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38977139 - 2⁴ = 38977123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38977093 and 38977102.

It is not a weakly prime, because it can be changed into another prime (38977339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19488569 + 19488570.

It is an arithmetic number, because the mean of its divisors is an integer number (19488570).

Almost surely, 2^38977139 is an apocalyptic number.

38977139 is a deficient number, since it is larger than the sum of its proper divisors (1).

38977139 is an equidigital number, since it uses as much as digits as its factorization.

38977139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768, while the sum is 47.

The square root of 38977139 is about 6243.1673852300. The cubic root of 38977139 is about 339.0548693972.

The spelling of 38977139 in words is "thirty-eight million, nine hundred seventy-seven thousand, one hundred thirty-nine".