429660857 has 2 divisors, whose sum is σ = 429660858. Its totient is φ = 429660856.

The previous prime is 429660823. The next prime is 429660901. The reversal of 429660857 is 758066924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 360088576 + 69572281 = 18976^2 + 8341^2 .

It is a cyclic number.

It is not a de Polignac number, because 429660857 - 2¹⁸ = 429398713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (429660557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214830428 + 214830429.

It is an arithmetic number, because the mean of its divisors is an integer number (214830429).

Almost surely, 2^429660857 is an apocalyptic number.

It is an amenable number.

429660857 is a deficient number, since it is larger than the sum of its proper divisors (1).

429660857 is an equidigital number, since it uses as much as digits as its factorization.

429660857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 429660857 is about 20728.2622764186. The cubic root of 429660857 is about 754.5857452926.

The spelling of 429660857 in words is "four hundred twenty-nine million, six hundred sixty thousand, eight hundred fifty-seven".