39129137 has 2 divisors, whose sum is σ = 39129138. Its totient is φ = 39129136.

The previous prime is 39129107. The next prime is 39129157. The reversal of 39129137 is 73192193.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33131536 + 5997601 = 5756^2 + 2449^2 .

It is a cyclic number.

It is not a de Polignac number, because 39129137 - 2⁶ = 39129073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39129097 and 39129106.

It is not a weakly prime, because it can be changed into another prime (39129107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19564568 + 19564569.

It is an arithmetic number, because the mean of its divisors is an integer number (19564569).

Almost surely, 2^39129137 is an apocalyptic number.

It is an amenable number.

39129137 is a deficient number, since it is larger than the sum of its proper divisors (1).

39129137 is an equidigital number, since it uses as much as digits as its factorization.

39129137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 35.

The square root of 39129137 is about 6255.3286884064. The cubic root of 39129137 is about 339.4950318225.

The spelling of 39129137 in words is "thirty-nine million, one hundred twenty-nine thousand, one hundred thirty-seven".