8429229261 has 6 divisors (see below), whose sum is σ = 12175553390. Its totient is φ = 5619486168.

The previous prime is 8429229247. The next prime is 8429229283. The reversal of 8429229261 is 1629229248.

8429229261 is a `hidden beast` number, since 84 + 292 + 29 + 261 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5672349225 + 2756880036 = 75315^2 + 52506^2 .

It is not a de Polignac number, because 8429229261 - 2⁵ = 8429229229 is a prime.

It is a super-2 number, since 2×8429229261² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8429229161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 468290506 + ... + 468290523.

Almost surely, 2^8429229261 is an apocalyptic number.

It is an amenable number.

8429229261 is a deficient number, since it is larger than the sum of its proper divisors (3746324129).

8429229261 is a wasteful number, since it uses less digits than its factorization.

8429229261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936581035 (or 936581032 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 8429229261 is about 91810.8341155879. The cubic root of 8429229261 is about 2035.1478026936.

The spelling of 8429229261 in words is "eight billion, four hundred twenty-nine million, two hundred twenty-nine thousand, two hundred sixty-one".