429947849 has 2 divisors, whose sum is σ = 429947850. Its totient is φ = 429947848.

The previous prime is 429947831. The next prime is 429947851. The reversal of 429947849 is 948749924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377602624 + 52345225 = 19432^2 + 7235^2 .

It is a cyclic number.

It is not a de Polignac number, because 429947849 - 2⁸ = 429947593 is a prime.

Together with 429947851, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 429947794 and 429947803.

It is not a weakly prime, because it can be changed into another prime (429947879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214973924 + 214973925.

It is an arithmetic number, because the mean of its divisors is an integer number (214973925).

Almost surely, 2^429947849 is an apocalyptic number.

It is an amenable number.

429947849 is a deficient number, since it is larger than the sum of its proper divisors (1).

429947849 is an equidigital number, since it uses as much as digits as its factorization.

429947849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 56.

The square root of 429947849 is about 20735.1838429275. The cubic root of 429947849 is about 754.7537164335.

The spelling of 429947849 in words is "four hundred twenty-nine million, nine hundred forty-seven thousand, eight hundred forty-nine".