429991117 has 2 divisors, whose sum is σ = 429991118. Its totient is φ = 429991116.

The previous prime is 429991063. The next prime is 429991127. The reversal of 429991117 is 711199924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370716516 + 59274601 = 19254^2 + 7699^2 .

It is a cyclic number.

It is not a de Polignac number, because 429991117 - 2⁷ = 429990989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (429991127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214995558 + 214995559.

It is an arithmetic number, because the mean of its divisors is an integer number (214995559).

Almost surely, 2^429991117 is an apocalyptic number.

It is an amenable number.

429991117 is a deficient number, since it is larger than the sum of its proper divisors (1).

429991117 is an equidigital number, since it uses as much as digits as its factorization.

429991117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 43.

The square root of 429991117 is about 20736.2271640721. The cubic root of 429991117 is about 754.7790339136.

It can be divided in two parts, 42 and 9991117, that multiplied together give a palindrome (419626914).

The spelling of 429991117 in words is "four hundred twenty-nine million, nine hundred ninety-one thousand, one hundred seventeen".