83449857 has 4 divisors (see below), whose sum is σ = 111266480. Its totient is φ = 55633236.

The previous prime is 83449831. The next prime is 83449859. The reversal of 83449857 is 75894438.

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 not a de Polignac number, because 83449857 - 2¹¹ = 83447809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83449859) 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 3 ways as a sum of consecutive naturals, for example, 13908307 + ... + 13908312.

It is an arithmetic number, because the mean of its divisors is an integer number (27816620).

Almost surely, 2^83449857 is an apocalyptic number.

It is an amenable number.

83449857 is a deficient number, since it is larger than the sum of its proper divisors (27816623).

83449857 is a wasteful number, since it uses less digits than its factorization.

83449857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27816622.

The product of its digits is 967680, while the sum is 48.

The square root of 83449857 is about 9135.0893263285. The cubic root of 83449857 is about 436.9937231494.

The spelling of 83449857 in words is "eighty-three million, four hundred forty-nine thousand, eight hundred fifty-seven".