83278983 has 4 divisors (see below), whose sum is σ = 111038648. Its totient is φ = 55519320.

The previous prime is 83278961. The next prime is 83278997. The reversal of 83278983 is 38987238.

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

It is not a de Polignac number, because 83278983 - 2⁹ = 83278471 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83277983) 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, 13879828 + ... + 13879833.

It is an arithmetic number, because the mean of its divisors is an integer number (27759662).

Almost surely, 2^83278983 is an apocalyptic number.

83278983 is a deficient number, since it is larger than the sum of its proper divisors (27759665).

83278983 is a wasteful number, since it uses less digits than its factorization.

83278983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27759664.

The product of its digits is 580608, while the sum is 48.

The square root of 83278983 is about 9125.7319158520. The cubic root of 83278983 is about 436.6952529376.

The spelling of 83278983 in words is "eighty-three million, two hundred seventy-eight thousand, nine hundred eighty-three".