84812289 has 4 divisors (see below), whose sum is σ = 113083056. Its totient is φ = 56541524.

The previous prime is 84812281. The next prime is 84812291. The reversal of 84812289 is 98221848.

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 84812289 - 2³ = 84812281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84812289.

It is not an unprimeable number, because it can be changed into a prime (84812281) 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, 14135379 + ... + 14135384.

It is an arithmetic number, because the mean of its divisors is an integer number (28270764).

Almost surely, 2^84812289 is an apocalyptic number.

It is an amenable number.

84812289 is a deficient number, since it is larger than the sum of its proper divisors (28270767).

84812289 is a wasteful number, since it uses less digits than its factorization.

84812289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28270766.

The product of its digits is 73728, while the sum is 42.

The square root of 84812289 is about 9209.3587724662. The cubic root of 84812289 is about 439.3590685544.

The spelling of 84812289 in words is "eighty-four million, eight hundred twelve thousand, two hundred eighty-nine".