83489729 has 8 divisors (see below), whose sum is σ = 84188160. Its totient is φ = 82794400.

The previous prime is 83489699. The next prime is 83489759. The reversal of 83489729 is 92798438.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (83489699) and next prime (83489759).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83489729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83489759) 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, 99092 + ... + 99930.

It is an arithmetic number, because the mean of its divisors is an integer number (10523520).

Almost surely, 2^83489729 is an apocalyptic number.

It is an amenable number.

83489729 is a deficient number, since it is larger than the sum of its proper divisors (698431).

83489729 is a wasteful number, since it uses less digits than its factorization.

83489729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551.

The product of its digits is 870912, while the sum is 50.

The square root of 83489729 is about 9137.2714198496. The cubic root of 83489729 is about 437.0633100050.

The spelling of 83489729 in words is "eighty-three million, four hundred eighty-nine thousand, seven hundred twenty-nine".