430428857 has 4 divisors (see below), whose sum is σ = 430475556. Its totient is φ = 430382160.

The previous prime is 430428811. The next prime is 430428883. The reversal of 430428857 is 758824034.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 11162281 + 419266576 = 3341^2 + 20476^2 .

It is a cyclic number.

It is not a de Polignac number, because 430428857 - 2¹⁴ = 430412473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (430428157) 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 in 3 ways as a sum of consecutive naturals, for example, 4394 + ... + 29667.

It is an arithmetic number, because the mean of its divisors is an integer number (107618889).

Almost surely, 2^430428857 is an apocalyptic number.

It is an amenable number.

430428857 is a deficient number, since it is larger than the sum of its proper divisors (46699).

430428857 is a wasteful number, since it uses less digits than its factorization.

430428857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46698.

The product of its (nonzero) digits is 215040, while the sum is 41.

The square root of 430428857 is about 20746.7794368186. The cubic root of 430428857 is about 755.0350740252.

The spelling of 430428857 in words is "four hundred thirty million, four hundred twenty-eight thousand, eight hundred fifty-seven".