89213261 has 4 divisors (see below), whose sum is σ = 91288032. Its totient is φ = 87138492.

The previous prime is 89213249. The next prime is 89213269. The reversal of 89213261 is 16231298.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16231298 = 2 ⋅8115649.

It is a cyclic number.

It is not a de Polignac number, because 89213261 - 2⁶ = 89213197 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 (89213269) 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, 1037321 + ... + 1037406.

It is an arithmetic number, because the mean of its divisors is an integer number (22822008).

Almost surely, 2^89213261 is an apocalyptic number.

It is an amenable number.

89213261 is a deficient number, since it is larger than the sum of its proper divisors (2074771).

89213261 is a wasteful number, since it uses less digits than its factorization.

89213261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074770.

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

The square root of 89213261 is about 9445.2771796279. The cubic root of 89213261 is about 446.8308378351.

The spelling of 89213261 in words is "eighty-nine million, two hundred thirteen thousand, two hundred sixty-one".