89117261 has 6 divisors (see below), whose sum is σ = 92242890. Its totient is φ = 85995168.

The previous prime is 89117257. The next prime is 89117309. The reversal of 89117261 is 16271198.

It can be written as a sum of positive squares in 3 ways, for example, as 3924361 + 85192900 = 1981^2 + 9230^2 .

It is not a de Polignac number, because 89117261 - 2² = 89117257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89117251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49961 + ... + 51713.

It is an arithmetic number, because the mean of its divisors is an integer number (15373815).

Almost surely, 2^89117261 is an apocalyptic number.

It is an amenable number.

89117261 is a deficient number, since it is larger than the sum of its proper divisors (3125629).

89117261 is an frugal number, since it uses more digits than its factorization.

89117261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3535 (or 1782 counting only the distinct ones).

The product of its digits is 6048, while the sum is 35.

The square root of 89117261 is about 9440.1939069068. The cubic root of 89117261 is about 446.6705060807.

The spelling of 89117261 in words is "eighty-nine million, one hundred seventeen thousand, two hundred sixty-one".