39516949903 has 4 divisors (see below), whose sum is σ = 39522604600. Its totient is φ = 39511295208.

The previous prime is 39516949891. The next prime is 39516949909. The reversal of 39516949903 is 30994961593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30994961593 = 41 ⋅755974673.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39516949903 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 (39516949909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2816853 + ... + 2830846.

It is an arithmetic number, because the mean of its divisors is an integer number (9880651150).

Almost surely, 2^39516949903 is an apocalyptic number.

39516949903 is a deficient number, since it is larger than the sum of its proper divisors (5654697).

39516949903 is an equidigital number, since it uses as much as digits as its factorization.

39516949903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5654696.

The product of its (nonzero) digits is 7085880, while the sum is 58.

The spelling of 39516949903 in words is "thirty-nine billion, five hundred sixteen million, nine hundred forty-nine thousand, nine hundred three".