128859473 has 16 divisors (see below), whose sum is σ = 138782160. Its totient is φ = 119218176.

The previous prime is 128859469. The next prime is 128859517. The reversal of 128859473 is 374958821.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 32171584 + 96687889 = 5672^2 + 9833^2 .

It is a cyclic number.

It is not a de Polignac number, because 128859473 - 2² = 128859469 is a prime.

It is a super-3 number, since 3×128859473³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128859173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364865 + ... + 365217.

It is an arithmetic number, because the mean of its divisors is an integer number (8673885).

Almost surely, 2^128859473 is an apocalyptic number.

It is an amenable number.

128859473 is a deficient number, since it is larger than the sum of its proper divisors (9922687).

128859473 is a wasteful number, since it uses less digits than its factorization.

128859473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676.

The product of its digits is 483840, while the sum is 47.

The square root of 128859473 is about 11351.6286496696. The cubic root of 128859473 is about 505.0938922894.

The spelling of 128859473 in words is "one hundred twenty-eight million, eight hundred fifty-nine thousand, four hundred seventy-three".