83689453 has 8 divisors (see below), whose sum is σ = 88742520. Its totient is φ = 78650880.

The previous prime is 83689423. The next prime is 83689483. The reversal of 83689453 is 35498638.

83689453 is a nontrivial binomial coefficient, being equal to C(12938, 2).

It is an interprime number because it is at equal distance from previous prime (83689423) and next prime (83689483).

It can be written as a sum of positive squares in 4 ways, for example, as 915849 + 82773604 = 957^2 + 9098^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83689453 - 2¹³ = 83681261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83689423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9703 + ... + 16171.

It is an arithmetic number, because the mean of its divisors is an integer number (11092815).

Almost surely, 2^83689453 is an apocalyptic number.

83689453 is the 12937-th triangular number and also the 6469-th hexagonal number.

83689453 is the 4313-rd centered nonagonal number.

It is an amenable number.

83689453 is a deficient number, since it is larger than the sum of its proper divisors (5053067).

83689453 is a wasteful number, since it uses less digits than its factorization.

83689453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7247.

The product of its digits is 622080, while the sum is 46.

The square root of 83689453 is about 9148.1939747690. The cubic root of 83689453 is about 437.4115465259.

The spelling of 83689453 in words is "eighty-three million, six hundred eighty-nine thousand, four hundred fifty-three".