39874318849 has 4 divisors (see below), whose sum is σ = 40118946736. Its totient is φ = 39629690964.

The previous prime is 39874318843. The next prime is 39874318853. The reversal of 39874318849 is 94881347893.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94881347893 = 29 ⋅3271770617.

It is a cyclic number.

It is not a de Polignac number, because 39874318849 - 2²⁹ = 39337447937 is a prime.

It is a super-2 number, since 2×39874318849² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39874318843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122313699 + ... + 122314024.

It is an arithmetic number, because the mean of its divisors is an integer number (10029736684).

Almost surely, 2^39874318849 is an apocalyptic number.

It is an amenable number.

39874318849 is a deficient number, since it is larger than the sum of its proper divisors (244627887).

39874318849 is a wasteful number, since it uses less digits than its factorization.

39874318849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244627886.

The product of its digits is 41803776, while the sum is 64.

The spelling of 39874318849 in words is "thirty-nine billion, eight hundred seventy-four million, three hundred eighteen thousand, eight hundred forty-nine".