39956137 has 8 divisors (see below), whose sum is σ = 45561096. Its totient is φ = 34712832.

The previous prime is 39956123. The next prime is 39956141. The reversal of 39956137 is 73165993.

It is a happy number.

39956137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 379456 + 39576681 = 616^2 + 6291^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39956137 - 2¹⁵ = 39923369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39956093 and 39956102.

It is not an unprimeable number, because it can be changed into a prime (39956237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90178 + ... + 90619.

It is an arithmetic number, because the mean of its divisors is an integer number (5695137).

Almost surely, 2^39956137 is an apocalyptic number.

It is an amenable number.

39956137 is a deficient number, since it is larger than the sum of its proper divisors (5604959).

39956137 is a wasteful number, since it uses less digits than its factorization.

39956137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180827.

The product of its digits is 153090, while the sum is 43.

The square root of 39956137 is about 6321.0866945487. The cubic root of 39956137 is about 341.8701358224.

The spelling of 39956137 in words is "thirty-nine million, nine hundred fifty-six thousand, one hundred thirty-seven".