82242889 has 4 divisors (see below), whose sum is σ = 87080724. Its totient is φ = 77405056.

The previous prime is 82242859. The next prime is 82242893. The reversal of 82242889 is 98824228.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65367225 + 16875664 = 8085^2 + 4108^2 .

It is a cyclic number.

It is not a de Polignac number, because 82242889 - 2⁵ = 82242857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82242829) 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, 2418892 + ... + 2418925.

It is an arithmetic number, because the mean of its divisors is an integer number (21770181).

Almost surely, 2^82242889 is an apocalyptic number.

It is an amenable number.

82242889 is a deficient number, since it is larger than the sum of its proper divisors (4837835).

82242889 is a wasteful number, since it uses less digits than its factorization.

82242889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4837834.

The product of its digits is 147456, while the sum is 43.

The square root of 82242889 is about 9068.7865230140. The cubic root of 82242889 is about 434.8766797121.

The spelling of 82242889 in words is "eighty-two million, two hundred forty-two thousand, eight hundred eighty-nine".