83438885 has 16 divisors (see below), whose sum is σ = 103501056. Its totient is φ = 64525248.

The previous prime is 83438879. The next prime is 83438893. The reversal of 83438885 is 58883438.

It is a cyclic number.

It is not a de Polignac number, because 83438885 - 2²⁰ = 82390309 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28772 + ... + 31538.

It is an arithmetic number, because the mean of its divisors is an integer number (6468816).

Almost surely, 2^83438885 is an apocalyptic number.

It is an amenable number.

83438885 is a deficient number, since it is larger than the sum of its proper divisors (20062171).

83438885 is a wasteful number, since it uses less digits than its factorization.

83438885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972.

The product of its digits is 737280, while the sum is 47.

The square root of 83438885 is about 9134.4887651143. The cubic root of 83438885 is about 436.9745703094.

The spelling of 83438885 in words is "eighty-three million, four hundred thirty-eight thousand, eight hundred eighty-five".