8212489 has 4 divisors (see below), whose sum is σ = 8477440. Its totient is φ = 7947540.

The previous prime is 8212487. The next prime is 8212493. The reversal of 8212489 is 9842128.

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 8212489 - 2¹ = 8212487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8212487) 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, 132429 + ... + 132490.

It is an arithmetic number, because the mean of its divisors is an integer number (2119360).

Almost surely, 2^8212489 is an apocalyptic number.

It is an amenable number.

8212489 is a deficient number, since it is larger than the sum of its proper divisors (264951).

8212489 is a wasteful number, since it uses less digits than its factorization.

8212489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264950.

The product of its digits is 9216, while the sum is 34.

The square root of 8212489 is about 2865.7440569597. The cubic root of 8212489 is about 201.7552913601.

The spelling of 8212489 in words is "eight million, two hundred twelve thousand, four hundred eighty-nine".