88921609 has 8 divisors (see below), whose sum is σ = 104903168. Its totient is φ = 73759680.

The previous prime is 88921597. The next prime is 88921639. The reversal of 88921609 is 90612988.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 88921609 - 2¹¹ = 88919561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88921639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204672 + ... + 205105.

It is an arithmetic number, because the mean of its divisors is an integer number (13112896).

Almost surely, 2^88921609 is an apocalyptic number.

It is an amenable number.

88921609 is a deficient number, since it is larger than the sum of its proper divisors (15981559).

88921609 is a wasteful number, since it uses less digits than its factorization.

88921609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409815.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 88921609 is about 9429.8255020971. The cubic root of 88921609 is about 446.3433864717.

It can be divided in two parts, 8892 and 1609, that added together give a palindrome (10501).

The spelling of 88921609 in words is "eighty-eight million, nine hundred twenty-one thousand, six hundred nine".