83854991 has 8 divisors (see below), whose sum is σ = 91880400. Its totient is φ = 75896640.

The previous prime is 83854949. The next prime is 83855017. The reversal of 83854991 is 19945838.

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

It is a cyclic number.

It is not a de Polignac number, because 83854991 - 2¹⁴ = 83838607 is a prime.

It is a super-2 number, since 2×83854991² = 14063319031220162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83884991) 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 7 ways as a sum of consecutive naturals, for example, 14126 + ... + 19163.

It is an arithmetic number, because the mean of its divisors is an integer number (11485050).

Almost surely, 2^83854991 is an apocalyptic number.

83854991 is a deficient number, since it is larger than the sum of its proper divisors (8025409).

83854991 is a wasteful number, since it uses less digits than its factorization.

83854991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33529.

The product of its digits is 311040, while the sum is 47.

The square root of 83854991 is about 9157.2370833128. The cubic root of 83854991 is about 437.6997570516.

The spelling of 83854991 in words is "eighty-three million, eight hundred fifty-four thousand, nine hundred ninety-one".