29854613947 has 4 divisors (see below), whose sum is σ = 29877993936. Its totient is φ = 29831233960.

The previous prime is 29854613927. The next prime is 29854613977. The reversal of 29854613947 is 74931645892.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29854613947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29854613891 and 29854613900.

It is not an unprimeable number, because it can be changed into a prime (29854613927) 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, 11688079 + ... + 11690632.

It is an arithmetic number, because the mean of its divisors is an integer number (7469498484).

Almost surely, 2^29854613947 is an apocalyptic number.

29854613947 is a deficient number, since it is larger than the sum of its proper divisors (23379989).

29854613947 is a wasteful number, since it uses less digits than its factorization.

29854613947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23379988.

The product of its digits is 13063680, while the sum is 58.

The spelling of 29854613947 in words is "twenty-nine billion, eight hundred fifty-four million, six hundred thirteen thousand, nine hundred forty-seven".