83899959 has 32 divisors (see below), whose sum is σ = 132163584. Its totient is φ = 46673280.

The previous prime is 83899957. The next prime is 83899967. The reversal of 83899959 is 95999838.

It is not a de Polignac number, because 83899959 - 2¹ = 83899957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83899957) 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 31 ways as a sum of consecutive naturals, for example, 95229 + ... + 96105.

It is an arithmetic number, because the mean of its divisors is an integer number (4130112).

Almost surely, 2^83899959 is an apocalyptic number.

83899959 is a deficient number, since it is larger than the sum of its proper divisors (48263625).

83899959 is a wasteful number, since it uses less digits than its factorization.

83899959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127.

The product of its digits is 6298560, while the sum is 60.

The square root of 83899959 is about 9159.6920799774. The cubic root of 83899959 is about 437.7779832259. Note that the first 3 decimals are identical.

The spelling of 83899959 in words is "eighty-three million, eight hundred ninety-nine thousand, nine hundred fifty-nine".