29449665378839 has 4 divisors (see below), whose sum is σ = 30399654584640. Its totient is φ = 28499676173040.

The previous prime is 29449665378817. The next prime is 29449665378841. The reversal of 29449665378839 is 93887356694492.

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

It is a cyclic number.

It is not a de Polignac number, because 29449665378839 - 2¹² = 29449665374743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29449665878839) 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, 474994602854 + ... + 474994602915.

It is an arithmetic number, because the mean of its divisors is an integer number (7599913646160).

Almost surely, 2^{29449665378839} is an apocalyptic number.

29449665378839 is a deficient number, since it is larger than the sum of its proper divisors (949989205801).

29449665378839 is an equidigital number, since it uses as much as digits as its factorization.

29449665378839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949989205800.

The product of its digits is 16930529280, while the sum is 83.

It can be divided in two parts, 294496653 and 78839, that added together give a palindrome (294575492).

The spelling of 29449665378839 in words is "twenty-nine trillion, four hundred forty-nine billion, six hundred sixty-five million, three hundred seventy-eight thousand, eight hundred thirty-nine".