83853921 has 8 divisors (see below), whose sum is σ = 111859264. Its totient is φ = 55875600.

The previous prime is 83853919. The next prime is 83853923. The reversal of 83853921 is 12935838.

It is an interprime number because it is at equal distance from previous prime (83853919) and next prime (83853923).

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

It is not a de Polignac number, because 83853921 - 2¹ = 83853919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83853921.

It is not an unprimeable number, because it can be changed into a prime (83853923) 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, 2175 + ... + 13131.

It is an arithmetic number, because the mean of its divisors is an integer number (13982408).

Almost surely, 2^83853921 is an apocalyptic number.

It is an amenable number.

83853921 is a deficient number, since it is larger than the sum of its proper divisors (28005343).

83853921 is a wasteful number, since it uses less digits than its factorization.

83853921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13511.

The product of its digits is 51840, while the sum is 39.

The square root of 83853921 is about 9157.1786593907. The cubic root of 83853921 is about 437.6978953428.

The spelling of 83853921 in words is "eighty-three million, eight hundred fifty-three thousand, nine hundred twenty-one".