83643838 has 8 divisors (see below), whose sum is σ = 127184688. Its totient is φ = 41248944.

The previous prime is 83643829. The next prime is 83643863. The reversal of 83643838 is 83834638.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 83643794 and 83643803.

It is a congruent number.

It is an unprimeable number.

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, 286306 + ... + 286597.

It is an arithmetic number, because the mean of its divisors is an integer number (15898086).

Almost surely, 2^83643838 is an apocalyptic number.

83643838 is a deficient number, since it is larger than the sum of its proper divisors (43540850).

83643838 is a wasteful number, since it uses less digits than its factorization.

83643838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572978.

The product of its digits is 331776, while the sum is 43.

The square root of 83643838 is about 9145.7005199164. The cubic root of 83643838 is about 437.3320615844.

The spelling of 83643838 in words is "eighty-three million, six hundred forty-three thousand, eight hundred thirty-eight".