29349171856 has 15 divisors (see below), whose sum is σ = 56865348201. Its totient is φ = 14674243296.

The previous prime is 29349171851. The next prime is 29349171871. The reversal of 29349171856 is 65817194392.

It is a happy number.

The square root of 29349171856 is 171316.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 24060973456 + 5288198400 = 155116^2 + 72720^2 .

It is a super-2 number, since 2×29349171856² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29349171797 and 29349171806.

It is not an unprimeable number, because it can be changed into a prime (29349171851) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 663850 + ... + 706678.

Almost surely, 2^29349171856 is an apocalyptic number.

29349171856 is the 171316-th square number.

It is an amenable number.

29349171856 is a deficient number, since it is larger than the sum of its proper divisors (27516176345).

29349171856 is an frugal number, since it uses more digits than its factorization.

29349171856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85666 (or 42831 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 55.

The spelling of 29349171856 in words is "twenty-nine billion, three hundred forty-nine million, one hundred seventy-one thousand, eight hundred fifty-six".