29639670593 has 4 divisors (see below), whose sum is σ = 31919645268. Its totient is φ = 27359695920.

The previous prime is 29639670589. The next prime is 29639670601. The reversal of 29639670593 is 39507693692.

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 2567246224 + 27072424369 = 50668^2 + 164537^2 .

It is a cyclic number.

It is not a de Polignac number, because 29639670593 - 2² = 29639670589 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29639670553) 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, 1139987318 + ... + 1139987343.

It is an arithmetic number, because the mean of its divisors is an integer number (7979911317).

Almost surely, 2^29639670593 is an apocalyptic number.

It is an amenable number.

29639670593 is a deficient number, since it is larger than the sum of its proper divisors (2279974675).

29639670593 is a wasteful number, since it uses less digits than its factorization.

29639670593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279974674.

The product of its (nonzero) digits is 16533720, while the sum is 59.

The spelling of 29639670593 in words is "twenty-nine billion, six hundred thirty-nine million, six hundred seventy thousand, five hundred ninety-three".