13429639947 has 18 divisors (see below), whose sum is σ = 18725002492. Its totient is φ = 8560884464.

The previous prime is 13429639933. The next prime is 13429639961. The reversal of 13429639947 is 74993692431.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13429639933) and next prime (13429639961).

It is not a de Polignac number, because 13429639947 - 2⁷ = 13429639819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13429639967) 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 17 ways as a sum of consecutive naturals, for example, 4615129 + ... + 4618037.

Almost surely, 2^13429639947 is an apocalyptic number.

13429639947 is a deficient number, since it is larger than the sum of its proper divisors (5295362545).

13429639947 is an frugal number, since it uses more digits than its factorization.

13429639947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5867 (or 2935 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 57.

The spelling of 13429639947 in words is "thirteen billion, four hundred twenty-nine million, six hundred thirty-nine thousand, nine hundred forty-seven".