39959039 has 4 divisors (see below), whose sum is σ = 40003440. Its totient is φ = 39914640.

The previous prime is 39959011. The next prime is 39959041. The reversal of 39959039 is 93095993.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39959039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39958984 and 39959002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39959009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20822 + ... + 22659.

It is an arithmetic number, because the mean of its divisors is an integer number (10000860).

Almost surely, 2^39959039 is an apocalyptic number.

39959039 is a deficient number, since it is larger than the sum of its proper divisors (44401).

39959039 is an equidigital number, since it uses as much as digits as its factorization.

39959039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44400.

The product of its (nonzero) digits is 295245, while the sum is 47.

The square root of 39959039 is about 6321.3162395185. The cubic root of 39959039 is about 341.8784122575.

The spelling of 39959039 in words is "thirty-nine million, nine hundred fifty-nine thousand, thirty-nine".