427889715 has 16 divisors (see below), whose sum is σ = 746862336. Its totient is φ = 207461600.

The previous prime is 427889701. The next prime is 427889717. The reversal of 427889715 is 517988724.

427889715 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 427889715 - 2⁸ = 427889459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (427889717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1296471 + ... + 1296800.

It is an arithmetic number, because the mean of its divisors is an integer number (46678896).

Almost surely, 2^427889715 is an apocalyptic number.

427889715 is a deficient number, since it is larger than the sum of its proper divisors (318972621).

427889715 is a wasteful number, since it uses less digits than its factorization.

427889715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593290.

The product of its digits is 1128960, while the sum is 51.

The square root of 427889715 is about 20685.4952805100. The cubic root of 427889715 is about 753.5474697118.

Subtracting 427889715 from its reverse (517988724), we obtain a palindrome (90099009).

The spelling of 427889715 in words is "four hundred twenty-seven million, eight hundred eighty-nine thousand, seven hundred fifteen".