424687857 has 12 divisors (see below), whose sum is σ = 622408080. Its totient is φ = 257386360.

The previous prime is 424687831. The next prime is 424687859. The reversal of 424687857 is 758786424.

It is not a de Polignac number, because 424687857 - 2¹¹ = 424685809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (424687859) 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 in 11 ways as a sum of consecutive naturals, for example, 584607 + ... + 585332.

It is an arithmetic number, because the mean of its divisors is an integer number (51867340).

Almost surely, 2^424687857 is an apocalyptic number.

It is an amenable number.

424687857 is a deficient number, since it is larger than the sum of its proper divisors (197720223).

424687857 is a wasteful number, since it uses less digits than its factorization.

424687857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169964 (or 1169953 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 51.

The square root of 424687857 is about 20607.9561577562. The cubic root of 424687857 is about 751.6631872402.

The spelling of 424687857 in words is "four hundred twenty-four million, six hundred eighty-seven thousand, eight hundred fifty-seven".