39074639 has 2 divisors, whose sum is σ = 39074640. Its totient is φ = 39074638.

The previous prime is 39074617. The next prime is 39074641. The reversal of 39074639 is 93647093.

It is a strong prime.

It is an emirp because it is prime and its reverse (93647093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39074639 - 2²⁰ = 38026063 is a prime.

Together with 39074641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 39074596 and 39074605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39074689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19537319 + 19537320.

It is an arithmetic number, because the mean of its divisors is an integer number (19537320).

Almost surely, 2^39074639 is an apocalyptic number.

39074639 is a deficient number, since it is larger than the sum of its proper divisors (1).

39074639 is an equidigital number, since it uses as much as digits as its factorization.

39074639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 39074639 is about 6250.9710445658. The cubic root of 39074639 is about 339.3373454374.

The spelling of 39074639 in words is "thirty-nine million, seventy-four thousand, six hundred thirty-nine".