39054857849 has 4 divisors (see below), whose sum is σ = 44634123264. Its totient is φ = 33475592436.

The previous prime is 39054857767. The next prime is 39054857927. The reversal of 39054857849 is 94875845093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39054857849 - 2⁸ = 39054857593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39054857791 and 39054857800.

It is not an unprimeable number, because it can be changed into a prime (39054857549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2789632697 + ... + 2789632710.

It is an arithmetic number, because the mean of its divisors is an integer number (11158530816).

Almost surely, 2^39054857849 is an apocalyptic number.

It is an amenable number.

39054857849 is a deficient number, since it is larger than the sum of its proper divisors (5579265415).

39054857849 is an equidigital number, since it uses as much as digits as its factorization.

39054857849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5579265414.

The product of its (nonzero) digits is 43545600, while the sum is 62.

The spelling of 39054857849 in words is "thirty-nine billion, fifty-four million, eight hundred fifty-seven thousand, eight hundred forty-nine".