83138771 has 8 divisors (see below), whose sum is σ = 83787264. Its totient is φ = 82493320.

The previous prime is 83138761. The next prime is 83138777. The reversal of 83138771 is 17783138.

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 83138771 - 2⁶ = 83138707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83138777) 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, 90806 + ... + 91716.

It is an arithmetic number, because the mean of its divisors is an integer number (10473408).

Almost surely, 2^83138771 is an apocalyptic number.

83138771 is a deficient number, since it is larger than the sum of its proper divisors (648493).

83138771 is a wasteful number, since it uses less digits than its factorization.

83138771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521.

The product of its digits is 28224, while the sum is 38.

The square root of 83138771 is about 9118.0464464709. The cubic root of 83138771 is about 436.4500357657.

The spelling of 83138771 in words is "eighty-three million, one hundred thirty-eight thousand, seven hundred seventy-one".