83855913 has 8 divisors (see below), whose sum is σ = 112062048. Its totient is φ = 55776864.

The previous prime is 83855897. The next prime is 83855923. The reversal of 83855913 is 31955838.

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

It is not a de Polignac number, because 83855913 - 2⁴ = 83855897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83855923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30220 + ... + 32877.

It is an arithmetic number, because the mean of its divisors is an integer number (14007756).

Almost surely, 2^83855913 is an apocalyptic number.

It is an amenable number.

83855913 is a deficient number, since it is larger than the sum of its proper divisors (28206135).

83855913 is a wasteful number, since it uses less digits than its factorization.

83855913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63543.

The product of its digits is 129600, while the sum is 42.

The square root of 83855913 is about 9157.2874258702. The cubic root of 83855913 is about 437.7013612404.

The spelling of 83855913 in words is "eighty-three million, eight hundred fifty-five thousand, nine hundred thirteen".