82061489 has 4 divisors (see below), whose sum is σ = 82223220. Its totient is φ = 81899760.

The previous prime is 82061479. The next prime is 82061491. The reversal of 82061489 is 98416028.

82061489 = T₂₉₄ + T₂₉₅ + ... + T₈₀₂.

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 62410000 + 19651489 = 7900^2 + 4433^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82061489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82061429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80102 + ... + 81119.

It is an arithmetic number, because the mean of its divisors is an integer number (20555805).

Almost surely, 2^82061489 is an apocalyptic number.

It is an amenable number.

82061489 is a deficient number, since it is larger than the sum of its proper divisors (161731).

82061489 is a wasteful number, since it uses less digits than its factorization.

82061489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161730.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 82061489 is about 9058.7796639503. The cubic root of 82061489 is about 434.5567140555.

The spelling of 82061489 in words is "eighty-two million, sixty-one thousand, four hundred eighty-nine".