29939775473 has 4 divisors (see below), whose sum is σ = 29953632228. Its totient is φ = 29925918720.

The previous prime is 29939775461. The next prime is 29939775491. The reversal of 29939775473 is 37457793992.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24134554609 + 5805220864 = 155353^2 + 76192^2 .

It is a cyclic number.

It is not a de Polignac number, because 29939775473 - 2⁴ = 29939775457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29939775433) 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, 6925136 + ... + 6929457.

It is an arithmetic number, because the mean of its divisors is an integer number (7488408057).

Almost surely, 2^29939775473 is an apocalyptic number.

It is an amenable number.

29939775473 is a deficient number, since it is larger than the sum of its proper divisors (13856755).

29939775473 is a wasteful number, since it uses less digits than its factorization.

29939775473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13856754.

The product of its digits is 90016920, while the sum is 65.

The spelling of 29939775473 in words is "twenty-nine billion, nine hundred thirty-nine million, seven hundred seventy-five thousand, four hundred seventy-three".