89449921 has 8 divisors (see below), whose sum is σ = 101824704. Its totient is φ = 77782320.

The previous prime is 89449909. The next prime is 89449939. The reversal of 89449921 is 12994498.

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

It is not a de Polignac number, because 89449921 - 2⁷ = 89449793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89449961) 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, 176526 + ... + 177031.

It is an arithmetic number, because the mean of its divisors is an integer number (12728088).

Almost surely, 2^89449921 is an apocalyptic number.

It is an amenable number.

89449921 is a deficient number, since it is larger than the sum of its proper divisors (12374783).

89449921 is a wasteful number, since it uses less digits than its factorization.

89449921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353591.

The product of its digits is 186624, while the sum is 46.

The square root of 89449921 is about 9457.7968364731. The cubic root of 89449921 is about 447.2255983445.

The spelling of 89449921 in words is "eighty-nine million, four hundred forty-nine thousand, nine hundred twenty-one".