89312261 has 8 divisors (see below), whose sum is σ = 91179000. Its totient is φ = 87452352.

The previous prime is 89312221. The next prime is 89312269. The reversal of 89312261 is 16221398.

It can be written as a sum of positive squares in 4 ways, for example, as 481636 + 88830625 = 694^2 + 9425^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 89312261 - 2²² = 85117957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89312269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31115 + ... + 33863.

It is an arithmetic number, because the mean of its divisors is an integer number (11397375).

Almost surely, 2^89312261 is an apocalyptic number.

It is an amenable number.

89312261 is a deficient number, since it is larger than the sum of its proper divisors (1866739).

89312261 is a wasteful number, since it uses less digits than its factorization.

89312261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3415.

The product of its digits is 5184, while the sum is 32.

The square root of 89312261 is about 9450.5164409148. The cubic root of 89312261 is about 446.9960595355.

The spelling of 89312261 in words is "eighty-nine million, three hundred twelve thousand, two hundred sixty-one".