83855147 has 4 divisors (see below), whose sum is σ = 83885016. Its totient is φ = 83825280.

The previous prime is 83855143. The next prime is 83855159. The reversal of 83855147 is 74155838.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74155838 = 2 ⋅37077919.

It is a cyclic number.

It is not a de Polignac number, because 83855147 - 2² = 83855143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83855141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10229 + ... + 16502.

It is an arithmetic number, because the mean of its divisors is an integer number (20971254).

Almost surely, 2^83855147 is an apocalyptic number.

83855147 is a deficient number, since it is larger than the sum of its proper divisors (29869).

83855147 is a wasteful number, since it uses less digits than its factorization.

83855147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29868.

The product of its digits is 134400, while the sum is 41.

The square root of 83855147 is about 9157.2456011620. The cubic root of 83855147 is about 437.7000284770.

The spelling of 83855147 in words is "eighty-three million, eight hundred fifty-five thousand, one hundred forty-seven".