88911987 has 8 divisors (see below), whose sum is σ = 118821120. Its totient is φ = 59138760.

The previous prime is 88911973. The next prime is 88912009. The reversal of 88911987 is 78911988.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 88911987 - 2⁶ = 88911923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (88911947) 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 7 ways as a sum of consecutive naturals, for example, 32439 + ... + 35072.

It is an arithmetic number, because the mean of its divisors is an integer number (14852640).

Almost surely, 2^88911987 is an apocalyptic number.

88911987 is a deficient number, since it is larger than the sum of its proper divisors (29909133).

88911987 is a wasteful number, since it uses less digits than its factorization.

88911987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67953.

The product of its digits is 290304, while the sum is 51.

The square root of 88911987 is about 9429.3152985782. The cubic root of 88911987 is about 446.3272866319.

Subtracting from 88911987 its reverse (78911988), we obtain a palindrome (9999999).

It can be divided in two parts, 88911 and 987, that added together give a palindrome (89898).

The spelling of 88911987 in words is "eighty-eight million, nine hundred eleven thousand, nine hundred eighty-seven".