89446721 has 8 divisors (see below), whose sum is σ = 110088384. Its totient is φ = 70770960.

The previous prime is 89446697. The next prime is 89446727. The reversal of 89446721 is 12764498.

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

It is not a de Polignac number, because 89446721 - 2⁶ = 89446657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89446727) 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, 491375 + ... + 491556.

It is an arithmetic number, because the mean of its divisors is an integer number (13761048).

Almost surely, 2^89446721 is an apocalyptic number.

It is an amenable number.

89446721 is a deficient number, since it is larger than the sum of its proper divisors (20641663).

89446721 is a wasteful number, since it uses less digits than its factorization.

89446721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982951.

The product of its digits is 96768, while the sum is 41.

The square root of 89446721 is about 9457.6276623686. The cubic root of 89446721 is about 447.2202652338.

The spelling of 89446721 in words is "eighty-nine million, four hundred forty-six thousand, seven hundred twenty-one".