83919853 has 2 divisors, whose sum is σ = 83919854. Its totient is φ = 83919852.

The previous prime is 83919839. The next prime is 83919917. The reversal of 83919853 is 35891938.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70509609 + 13410244 = 8397^2 + 3662^2 .

It is a cyclic number.

It is not a de Polignac number, because 83919853 - 2¹⁷ = 83788781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83959853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41959926 + 41959927.

It is an arithmetic number, because the mean of its divisors is an integer number (41959927).

Almost surely, 2^83919853 is an apocalyptic number.

It is an amenable number.

83919853 is a deficient number, since it is larger than the sum of its proper divisors (1).

83919853 is an equidigital number, since it uses as much as digits as its factorization.

83919853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 46.

The square root of 83919853 is about 9160.7779691465. Note that the first 3 decimals coincide. The cubic root of 83919853 is about 437.8125818401.

The spelling of 83919853 in words is "eighty-three million, nine hundred nineteen thousand, eight hundred fifty-three".