83085779 has 8 divisors (see below), whose sum is σ = 95108448. Its totient is φ = 71101440.

The previous prime is 83085767. The next prime is 83085781. The reversal of 83085779 is 97758038.

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

It is a cyclic number.

It is not a de Polignac number, because 83085779 - 2¹² = 83081683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83085719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4772 + ... + 13745.

It is an arithmetic number, because the mean of its divisors is an integer number (11888556).

Almost surely, 2^83085779 is an apocalyptic number.

83085779 is a deficient number, since it is larger than the sum of its proper divisors (12022669).

83085779 is a wasteful number, since it uses less digits than its factorization.

83085779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19165.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 83085779 is about 9115.1400976617. The cubic root of 83085779 is about 436.3572861147.

The spelling of 83085779 in words is "eighty-three million, eighty-five thousand, seven hundred seventy-nine".