83965689 has 6 divisors (see below), whose sum is σ = 121283786. Its totient is φ = 55977120.

The previous prime is 83965681. The next prime is 83965697. The reversal of 83965689 is 98656938.

It is an interprime number because it is at equal distance from previous prime (83965681) and next prime (83965697).

It can be written as a sum of positive squares in only one way, i.e., 82955664 + 1010025 = 9108^2 + 1005^2 .

It is not a de Polignac number, because 83965689 - 2³ = 83965681 is a prime.

It is a super-3 number, since 3×83965689³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83965681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4664752 + ... + 4664769.

Almost surely, 2^83965689 is an apocalyptic number.

It is an amenable number.

83965689 is a deficient number, since it is larger than the sum of its proper divisors (37318097).

83965689 is a wasteful number, since it uses less digits than its factorization.

83965689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9329527 (or 9329524 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 83965689 is about 9163.2793802219. The cubic root of 83965689 is about 437.8922766296.

The spelling of 83965689 in words is "eighty-three million, nine hundred sixty-five thousand, six hundred eighty-nine".