83997849 has 16 divisors (see below), whose sum is σ = 120804992. Its totient is φ = 51608448.

The previous prime is 83997847. The next prime is 83997869. The reversal of 83997849 is 94879938.

It is not a de Polignac number, because 83997849 - 2¹ = 83997847 is a prime.

It is a Duffinian number.

Its product of digits (3919104) is a multiple of the sum of its prime divisors (3456).

It is not an unprimeable number, because it can be changed into a prime (83997847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30789 + ... + 33405.

It is an arithmetic number, because the mean of its divisors is an integer number (7550312).

Almost surely, 2^83997849 is an apocalyptic number.

It is an amenable number.

83997849 is a deficient number, since it is larger than the sum of its proper divisors (36807143).

83997849 is a wasteful number, since it uses less digits than its factorization.

83997849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456.

The product of its digits is 3919104, while the sum is 57.

The square root of 83997849 is about 9165.0340424900. The cubic root of 83997849 is about 437.9481757245.

The spelling of 83997849 in words is "eighty-three million, nine hundred ninety-seven thousand, eight hundred forty-nine".