83858388 has 12 divisors (see below), whose sum is σ = 195669600. Its totient is φ = 27952792.

The previous prime is 83858371. The next prime is 83858389. The reversal of 83858388 is 88385838.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 83858388.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83858389) 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, 3494088 + ... + 3494111.

It is an arithmetic number, because the mean of its divisors is an integer number (16305800).

Almost surely, 2^83858388 is an apocalyptic number.

It is an amenable number.

83858388 is an abundant number, since it is smaller than the sum of its proper divisors (111811212).

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

83858388 is a wasteful number, since it uses less digits than its factorization.

83858388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6988206 (or 6988204 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 51.

The square root of 83858388 is about 9157.4225631452. The cubic root of 83858388 is about 437.7056674373.

The spelling of 83858388 in words is "eighty-three million, eight hundred fifty-eight thousand, three hundred eighty-eight".