39499039 has 2 divisors, whose sum is σ = 39499040. Its totient is φ = 39499038.

The previous prime is 39499021. The next prime is 39499067. The reversal of 39499039 is 93099493.

It is a weak prime.

It is an emirp because it is prime and its reverse (93099493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39499039 - 2⁹ = 39498527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39499039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39499139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19749519 + 19749520.

It is an arithmetic number, because the mean of its divisors is an integer number (19749520).

Almost surely, 2^39499039 is an apocalyptic number.

39499039 is a deficient number, since it is larger than the sum of its proper divisors (1).

39499039 is an equidigital number, since it uses as much as digits as its factorization.

39499039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236196, while the sum is 46.

The square root of 39499039 is about 6284.8260914682. The cubic root of 39499039 is about 340.5614684867.

The spelling of 39499039 in words is "thirty-nine million, four hundred ninety-nine thousand, thirty-nine".