13950471949 has 4 divisors (see below), whose sum is σ = 14771087964. Its totient is φ = 13129855936.

The previous prime is 13950471923. The next prime is 13950471961. The reversal of 13950471949 is 94917405931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94917405931 = 6007 ⋅15801133.

It can be written as a sum of positive squares in 2 ways, for example, as 10791469924 + 3159002025 = 103882^2 + 56205^2 .

It is a cyclic number.

It is not a de Polignac number, because 13950471949 - 2¹¹ = 13950469901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13950471896 and 13950471905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13950471979) 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, 410307982 + ... + 410308015.

It is an arithmetic number, because the mean of its divisors is an integer number (3692771991).

Almost surely, 2^13950471949 is an apocalyptic number.

It is an amenable number.

13950471949 is a deficient number, since it is larger than the sum of its proper divisors (820616015).

13950471949 is an equidigital number, since it uses as much as digits as its factorization.

13950471949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820616014.

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 13950471949 in words is "thirteen billion, nine hundred fifty million, four hundred seventy-one thousand, nine hundred forty-nine".