39884908849 has 4 divisors (see below), whose sum is σ = 40480206064. Its totient is φ = 39289611636.

The previous prime is 39884908801. The next prime is 39884908871. The reversal of 39884908849 is 94880948893.

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 a de Polignac number, because none of the positive numbers 2^k-39884908849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39884900849) 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, 297648507 + ... + 297648640.

It is an arithmetic number, because the mean of its divisors is an integer number (10120051516).

Almost surely, 2^39884908849 is an apocalyptic number.

It is an amenable number.

39884908849 is a deficient number, since it is larger than the sum of its proper divisors (595297215).

39884908849 is an equidigital number, since it uses as much as digits as its factorization.

39884908849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595297214.

The product of its (nonzero) digits is 143327232, while the sum is 70.

The spelling of 39884908849 in words is "thirty-nine billion, eight hundred eighty-four million, nine hundred eight thousand, eight hundred forty-nine".