89078993 has 4 divisors (see below), whose sum is σ = 89147748. Its totient is φ = 89010240.

The previous prime is 89078989. The next prime is 89079037. The reversal of 89078993 is 39987098.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39987098 = 2 ⋅19993549.

It can be written as a sum of positive squares in 2 ways, for example, as 72982849 + 16096144 = 8543^2 + 4012^2 .

It is a cyclic number.

It is not a de Polignac number, because 89078993 - 2² = 89078989 is a prime.

It is a super-3 number, since 3×89078993³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89078293) 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, 32396 + ... + 35037.

It is an arithmetic number, because the mean of its divisors is an integer number (22286937).

Almost surely, 2^89078993 is an apocalyptic number.

It is an amenable number.

89078993 is a deficient number, since it is larger than the sum of its proper divisors (68755).

89078993 is a wasteful number, since it uses less digits than its factorization.

89078993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68754.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 89078993 is about 9438.1668241243. The cubic root of 89078993 is about 446.6065617375.

The spelling of 89078993 in words is "eighty-nine million, seventy-eight thousand, nine hundred ninety-three".