89447213 has 4 divisors (see below), whose sum is σ = 89738880. Its totient is φ = 89155548.

The previous prime is 89447209. The next prime is 89447219. The reversal of 89447213 is 31274498.

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 not a de Polignac number, because 89447213 - 2² = 89447209 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 (89447219) 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, 145373 + ... + 145986.

It is an arithmetic number, because the mean of its divisors is an integer number (22434720).

Almost surely, 2^89447213 is an apocalyptic number.

It is an amenable number.

89447213 is a deficient number, since it is larger than the sum of its proper divisors (291667).

89447213 is a wasteful number, since it uses less digits than its factorization.

89447213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291666.

The product of its digits is 48384, while the sum is 38.

The square root of 89447213 is about 9457.6536730840. The cubic root of 89447213 is about 447.2210852079.

The spelling of 89447213 in words is "eighty-nine million, four hundred forty-seven thousand, two hundred thirteen".