83851093 has 4 divisors (see below), whose sum is σ = 86742540. Its totient is φ = 80959648.

The previous prime is 83851081. The next prime is 83851121. The reversal of 83851093 is 39015838.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57410929 + 26440164 = 7577^2 + 5142^2 .

It is a de Polignac number, because none of the positive numbers 2^k-83851093 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 (83851003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1445680 + ... + 1445737.

It is an arithmetic number, because the mean of its divisors is an integer number (21685635).

Almost surely, 2^83851093 is an apocalyptic number.

It is an amenable number.

83851093 is a deficient number, since it is larger than the sum of its proper divisors (2891447).

83851093 is a wasteful number, since it uses less digits than its factorization.

83851093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891446.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 83851093 is about 9157.0242437159. The cubic root of 83851093 is about 437.6929747875.

The spelling of 83851093 in words is "eighty-three million, eight hundred fifty-one thousand, ninety-three".