88639389 has 24 divisors (see below), whose sum is σ = 135158400. Its totient is φ = 55823040.

The previous prime is 88639387. The next prime is 88639393. The reversal of 88639389 is 98393688.

It is not a de Polignac number, because 88639389 - 2¹ = 88639387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88639387) 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 23 ways as a sum of consecutive naturals, for example, 96844 + ... + 97754.

It is an arithmetic number, because the mean of its divisors is an integer number (5631600).

Almost surely, 2^88639389 is an apocalyptic number.

It is an amenable number.

88639389 is a deficient number, since it is larger than the sum of its proper divisors (46519011).

88639389 is a wasteful number, since it uses less digits than its factorization.

88639389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505 (or 1502 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 88639389 is about 9414.8493880678. The cubic root of 88639389 is about 445.8706834830.

The spelling of 88639389 in words is "eighty-eight million, six hundred thirty-nine thousand, three hundred eighty-nine".