2117292829 has 4 divisors (see below), whose sum is σ = 2241839484. Its totient is φ = 1992746176.

The previous prime is 2117292757. The next prime is 2117292841. The reversal of 2117292829 is 9282927112.

It is a happy number.

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 1552517604 + 564775225 = 39402^2 + 23765^2 .

It is a cyclic number.

It is not a de Polignac number, because 2117292829 - 2¹¹ = 2117290781 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 (2117299829) 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, 62273302 + ... + 62273335.

It is an arithmetic number, because the mean of its divisors is an integer number (560459871).

Almost surely, 2^2117292829 is an apocalyptic number.

It is an amenable number.

2117292829 is a deficient number, since it is larger than the sum of its proper divisors (124546655).

2117292829 is a wasteful number, since it uses less digits than its factorization.

2117292829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124546654.

The product of its digits is 72576, while the sum is 43.

The square root of 2117292829 is about 46014.0503433462. The cubic root of 2117292829 is about 1284.0846138554.

The spelling of 2117292829 in words is "two billion, one hundred seventeen million, two hundred ninety-two thousand, eight hundred twenty-nine".