82289889 has 24 divisors (see below), whose sum is σ = 129965472. Its totient is φ = 49758720.

The previous prime is 82289881. The next prime is 82289897. The reversal of 82289889 is 98898228.

It is an interprime number because it is at equal distance from previous prime (82289881) and next prime (82289897).

It is not a de Polignac number, because 82289889 - 2³ = 82289881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82289881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67009 + ... + 68225.

It is an arithmetic number, because the mean of its divisors is an integer number (5415228).

Almost surely, 2^82289889 is an apocalyptic number.

It is an amenable number.

82289889 is a deficient number, since it is larger than the sum of its proper divisors (47675583).

82289889 is a wasteful number, since it uses less digits than its factorization.

82289889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917 (or 1914 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 54.

The square root of 82289889 is about 9071.3774587986. The cubic root of 82289889 is about 434.9595047519.

The spelling of 82289889 in words is "eighty-two million, two hundred eighty-nine thousand, eight hundred eighty-nine".