83966838 has 16 divisors (see below), whose sum is σ = 172472880. Its totient is φ = 27232416.

The previous prime is 83966837. The next prime is 83966881. The reversal of 83966838 is 83866938.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83966837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188893 + ... + 189336.

It is an arithmetic number, because the mean of its divisors is an integer number (10779555).

Almost surely, 2^83966838 is an apocalyptic number.

83966838 is an abundant number, since it is smaller than the sum of its proper divisors (88506042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83966838 is a wasteful number, since it uses less digits than its factorization.

83966838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378271.

The product of its digits is 1492992, while the sum is 51.

The square root of 83966838 is about 9163.3420759022. The cubic root of 83966838 is about 437.8942740166.

The spelling of 83966838 in words is "eighty-three million, nine hundred sixty-six thousand, eight hundred thirty-eight".