83449869 has 16 divisors (see below), whose sum is σ = 112467264. Its totient is φ = 55036800.

The previous prime is 83449859. The next prime is 83449939. The reversal of 83449869 is 96894438.

It is a happy number.

It is not a de Polignac number, because 83449869 - 2⁷ = 83449741 is a prime.

It is a super-2 number, since 2×83449869² = 13927761272234322, which contains 22 as substring.

It is a congruent 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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169714 + ... + 170204.

It is an arithmetic number, because the mean of its divisors is an integer number (7029204).

Almost surely, 2^83449869 is an apocalyptic number.

It is an amenable number.

83449869 is a deficient number, since it is larger than the sum of its proper divisors (29017395).

83449869 is a wasteful number, since it uses less digits than its factorization.

83449869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988.

The product of its digits is 1492992, while the sum is 51.

The square root of 83449869 is about 9135.0899831365. The cubic root of 83449869 is about 436.9937440958.

The spelling of 83449869 in words is "eighty-three million, four hundred forty-nine thousand, eight hundred sixty-nine".