83385579 has 4 divisors (see below), whose sum is σ = 111180776. Its totient is φ = 55590384.

The previous prime is 83385559. The next prime is 83385581. The reversal of 83385579 is 97558338.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 83385579 - 2⁹ = 83385067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83385559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13897594 + ... + 13897599.

It is an arithmetic number, because the mean of its divisors is an integer number (27795194).

Almost surely, 2^83385579 is an apocalyptic number.

83385579 is a deficient number, since it is larger than the sum of its proper divisors (27795197).

83385579 is a wasteful number, since it uses less digits than its factorization.

83385579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27795196.

The product of its digits is 907200, while the sum is 48.

The square root of 83385579 is about 9131.5704563892. The cubic root of 83385579 is about 436.8814948861.

The spelling of 83385579 in words is "eighty-three million, three hundred eighty-five thousand, five hundred seventy-nine".