39984137 has 2 divisors, whose sum is σ = 39984138. Its totient is φ = 39984136.

The previous prime is 39984107. The next prime is 39984149. The reversal of 39984137 is 73148993.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35236096 + 4748041 = 5936^2 + 2179^2 .

It is a cyclic number.

It is not a de Polignac number, because 39984137 - 2²² = 35789833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39984107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19992068 + 19992069.

It is an arithmetic number, because the mean of its divisors is an integer number (19992069).

Almost surely, 2^39984137 is an apocalyptic number.

It is an amenable number.

39984137 is a deficient number, since it is larger than the sum of its proper divisors (1).

39984137 is an equidigital number, since it uses as much as digits as its factorization.

39984137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 39984137 is about 6323.3011157148. The cubic root of 39984137 is about 341.9499744437.

The spelling of 39984137 in words is "thirty-nine million, nine hundred eighty-four thousand, one hundred thirty-seven".