83889005 has 8 divisors (see below), whose sum is σ = 100728600. Its totient is φ = 67070016.

The previous prime is 83888989. The next prime is 83889019. The reversal of 83889005 is 50098838.

It can be written as a sum of positive squares in 4 ways, for example, as 53042089 + 30846916 = 7283^2 + 5554^2 .

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 83889005 - 2⁴ = 83888989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6011 + ... + 14279.

It is an arithmetic number, because the mean of its divisors is an integer number (12591075).

Almost surely, 2^83889005 is an apocalyptic number.

It is an amenable number.

83889005 is a deficient number, since it is larger than the sum of its proper divisors (16839595).

83889005 is a wasteful number, since it uses less digits than its factorization.

83889005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10303.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 83889005 is about 9159.0941145945. The cubic root of 83889005 is about 437.7589302617.

The spelling of 83889005 in words is "eighty-three million, eight hundred eighty-nine thousand, five".