83821058 has 16 divisors (see below), whose sum is σ = 129820920. Its totient is φ = 40559616.

The previous prime is 83821043. The next prime is 83821063. The reversal of 83821058 is 85012838.

It can be written as a sum of positive squares in 4 ways, for example, as 61984129 + 21836929 = 7873^2 + 4673^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 11348 + ... + 17216.

Almost surely, 2^83821058 is an apocalyptic number.

83821058 is a deficient number, since it is larger than the sum of its proper divisors (45999862).

83821058 is a wasteful number, since it uses less digits than its factorization.

83821058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6101.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 83821058 is about 9155.3840989879. The cubic root of 83821058 is about 437.6407088084.

The spelling of 83821058 in words is "eighty-three million, eight hundred twenty-one thousand, fifty-eight".