83935940089 has 3 divisors (see below), whose sum is σ = 83936229807. Its totient is φ = 83935650372.

The previous prime is 83935940071. The next prime is 83935940107. The reversal of 83935940089 is 98004953938.

The square root of 83935940089 is 289717.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (83935940071) and next prime (83935940107).

It can be written as a sum of positive squares in only one way, i.e., 5363365225 + 78572574864 = 73235^2 + 280308^2 .

It is not a de Polignac number, because 83935940089 - 2¹⁷ = 83935809017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83935940189) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 144859 + ... + 434575.

It is an arithmetic number, because the mean of its divisors is an integer number (27978743269).

Almost surely, 2^83935940089 is an apocalyptic number.

83935940089 is the 289717-th square number.

83935940089 is the 144859-th centered octagonal number.

It is an amenable number.

83935940089 is a deficient number, since it is larger than the sum of its proper divisors (289718).

83935940089 is an frugal number, since it uses more digits than its factorization.

83935940089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579434 (or 289717 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 83935940089 in words is "eighty-three billion, nine hundred thirty-five million, nine hundred forty thousand, eighty-nine".