89391017 has 4 divisors (see below), whose sum is σ = 89648976. Its totient is φ = 89133060.

The previous prime is 89391007. The next prime is 89391031. The reversal of 89391017 is 71019398.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89391017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89391007) 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, 128459 + ... + 129152.

It is an arithmetic number, because the mean of its divisors is an integer number (22412244).

Almost surely, 2^89391017 is an apocalyptic number.

It is an amenable number.

89391017 is a deficient number, since it is larger than the sum of its proper divisors (257959).

89391017 is a wasteful number, since it uses less digits than its factorization.

89391017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257958.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 89391017 is about 9454.6822791673. The cubic root of 89391017 is about 447.1274087245.

The spelling of 89391017 in words is "eighty-nine million, three hundred ninety-one thousand, seventeen".