83859949 has 4 divisors (see below), whose sum is σ = 84041536. Its totient is φ = 83678364.

The previous prime is 83859931. The next prime is 83859959. The reversal of 83859949 is 94995838.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83859949 - 2⁷ = 83859821 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 83859949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83859959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90099 + ... + 91024.

It is an arithmetic number, because the mean of its divisors is an integer number (21010384).

Almost surely, 2^83859949 is an apocalyptic number.

It is an amenable number.

83859949 is a deficient number, since it is larger than the sum of its proper divisors (181587).

83859949 is a wasteful number, since it uses less digits than its factorization.

83859949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181586.

The product of its digits is 2799360, while the sum is 55.

The square root of 83859949 is about 9157.5077941545. The cubic root of 83859949 is about 437.7083833425.

The spelling of 83859949 in words is "eighty-three million, eight hundred fifty-nine thousand, nine hundred forty-nine".