83140579 has 6 divisors (see below), whose sum is σ = 85219580. Its totient is φ = 81111120.

The previous prime is 83140571. The next prime is 83140609. The reversal of 83140579 is 97504138.

It is not a de Polignac number, because 83140579 - 2³ = 83140571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83140571) 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 5 ways as a sum of consecutive naturals, for example, 23049 + ... + 26410.

Almost surely, 2^83140579 is an apocalyptic number.

83140579 is a deficient number, since it is larger than the sum of its proper divisors (2079001).

83140579 is an equidigital number, since it uses as much as digits as its factorization.

83140579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49541 (or 49500 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 83140579 is about 9118.1455899761. The cubic root of 83140579 is about 436.4531995361.

The spelling of 83140579 in words is "eighty-three million, one hundred forty thousand, five hundred seventy-nine".