82238889 has 4 divisors (see below), whose sum is σ = 109651856. Its totient is φ = 54825924.

The previous prime is 82238887. The next prime is 82238899. The reversal of 82238889 is 98883228.

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 not a de Polignac number, because 82238889 - 2¹ = 82238887 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82238887) 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, 13706479 + ... + 13706484.

It is an arithmetic number, because the mean of its divisors is an integer number (27412964).

Almost surely, 2^82238889 is an apocalyptic number.

It is an amenable number.

82238889 is a deficient number, since it is larger than the sum of its proper divisors (27412967).

82238889 is a wasteful number, since it uses less digits than its factorization.

82238889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27412966.

The product of its digits is 442368, while the sum is 48.

The square root of 82238889 is about 9068.5659836603. The cubic root of 82238889 is about 434.8696293157.

The spelling of 82238889 in words is "eighty-two million, two hundred thirty-eight thousand, eight hundred eighty-nine".