89088821 has 4 divisors (see below), whose sum is σ = 92962272. Its totient is φ = 85215372.

The previous prime is 89088817. The next prime is 89088827. The reversal of 89088821 is 12888098.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12888098 = 2 ⋅6444049.

It is a cyclic number.

It is not a de Polignac number, because 89088821 - 2² = 89088817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89088827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1936691 + ... + 1936736.

It is an arithmetic number, because the mean of its divisors is an integer number (23240568).

Almost surely, 2^89088821 is an apocalyptic number.

It is an amenable number.

89088821 is a deficient number, since it is larger than the sum of its proper divisors (3873451).

89088821 is a wasteful number, since it uses less digits than its factorization.

89088821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873450.

The product of its (nonzero) digits is 73728, while the sum is 44.

The square root of 89088821 is about 9438.6874617184. The cubic root of 89088821 is about 446.6229856916.

The spelling of 89088821 in words is "eighty-nine million, eighty-eight thousand, eight hundred twenty-one".