39439045644191 has 32 divisors (see below), whose sum is σ = 44098187443200. Its totient is φ = 35097722222080.

The previous prime is 39439045644029. The next prime is 39439045644197. The reversal of 39439045644191 is 19144654093493.

It is a de Polignac number, because none of the positive numbers 2^k-39439045644191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39439045644197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5072126 + ... + 10227636.

It is an arithmetic number, because the mean of its divisors is an integer number (1378068357600).

Almost surely, 2^{39439045644191} is an apocalyptic number.

39439045644191 is a deficient number, since it is larger than the sum of its proper divisors (4659141799009).

39439045644191 is a wasteful number, since it uses less digits than its factorization.

39439045644191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5155879.

The product of its (nonzero) digits is 50388480, while the sum is 62.

The spelling of 39439045644191 in words is "thirty-nine trillion, four hundred thirty-nine billion, forty-five million, six hundred forty-four thousand, one hundred ninety-one".