83478999 has 8 divisors (see below), whose sum is σ = 111435760. Its totient is φ = 55587456.

The previous prime is 83478979. The next prime is 83479013. The reversal of 83478999 is 99987438.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83478999 - 2⁸ = 83478743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83478929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13234 + ... + 18495.

It is an arithmetic number, because the mean of its divisors is an integer number (13929470).

Almost surely, 2^83478999 is an apocalyptic number.

83478999 is a deficient number, since it is larger than the sum of its proper divisors (27956761).

83478999 is a wasteful number, since it uses less digits than its factorization.

83478999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32609.

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

The square root of 83478999 is about 9136.6842453923. The cubic root of 83478999 is about 437.0445855851.

The spelling of 83478999 in words is "eighty-three million, four hundred seventy-eight thousand, nine hundred ninety-nine".