39885137 has 2 divisors, whose sum is σ = 39885138. Its totient is φ = 39885136.

The previous prime is 39885113. The next prime is 39885191. The reversal of 39885137 is 73158893.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32535616 + 7349521 = 5704^2 + 2711^2 .

It is an emirp because it is prime and its reverse (73158893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39885137 - 2⁶ = 39885073 is a prime.

It is not a weakly prime, because it can be changed into another prime (39881137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19942568 + 19942569.

It is an arithmetic number, because the mean of its divisors is an integer number (19942569).

Almost surely, 2^39885137 is an apocalyptic number.

It is an amenable number.

39885137 is a deficient number, since it is larger than the sum of its proper divisors (1).

39885137 is an equidigital number, since it uses as much as digits as its factorization.

39885137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 39885137 is about 6315.4680744977. The cubic root of 39885137 is about 341.6675205478.

The spelling of 39885137 in words is "thirty-nine million, eight hundred eighty-five thousand, one hundred thirty-seven".