89400321 has 8 divisors (see below), whose sum is σ = 132444960. Its totient is φ = 59600196.

The previous prime is 89400317. The next prime is 89400323. The reversal of 89400321 is 12300498.

It is not a de Polignac number, because 89400321 - 2² = 89400317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3311123 = 89400321 / (8 + 9 + 4 + 0 + 0 + 3 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (89400323) 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, 1655535 + ... + 1655588.

It is an arithmetic number, because the mean of its divisors is an integer number (16555620).

Almost surely, 2^89400321 is an apocalyptic number.

It is an amenable number.

89400321 is a deficient number, since it is larger than the sum of its proper divisors (43044639).

89400321 is a wasteful number, since it uses less digits than its factorization.

89400321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3311132 (or 3311126 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 89400321 is about 9455.1742977060. The cubic root of 89400321 is about 447.1429208316.

The spelling of 89400321 in words is "eighty-nine million, four hundred thousand, three hundred twenty-one".