29344779649 has 4 divisors (see below), whose sum is σ = 29524809136. Its totient is φ = 29164750164.

The previous prime is 29344779647. The next prime is 29344779679. The reversal of 29344779649 is 94697744392.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29344779649 - 2¹ = 29344779647 is a prime.

It is a super-2 number, since 2×29344779649² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29344779641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90014499 + ... + 90014824.

It is an arithmetic number, because the mean of its divisors is an integer number (7381202284).

Almost surely, 2^29344779649 is an apocalyptic number.

It is an amenable number.

29344779649 is a deficient number, since it is larger than the sum of its proper divisors (180029487).

29344779649 is a wasteful number, since it uses less digits than its factorization.

29344779649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180029486.

The product of its digits is 82301184, while the sum is 64.

The spelling of 29344779649 in words is "twenty-nine billion, three hundred forty-four million, seven hundred seventy-nine thousand, six hundred forty-nine".