429343991 has 2 divisors, whose sum is σ = 429343992. Its totient is φ = 429343990.

The previous prime is 429343979. The next prime is 429344009. The reversal of 429343991 is 199343924.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 429343991 - 2¹⁰ = 429342967 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (429346991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214671995 + 214671996.

It is an arithmetic number, because the mean of its divisors is an integer number (214671996).

Almost surely, 2^429343991 is an apocalyptic number.

429343991 is a deficient number, since it is larger than the sum of its proper divisors (1).

429343991 is an equidigital number, since it uses as much as digits as its factorization.

429343991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 44.

The square root of 429343991 is about 20720.6175342339. The cubic root of 429343991 is about 754.4002025445.

It can be divided in two parts, 4293 and 43991, that added together give a palindrome (48284).

The spelling of 429343991 in words is "four hundred twenty-nine million, three hundred forty-three thousand, nine hundred ninety-one".