83878783 has 4 divisors (see below), whose sum is σ = 84709368. Its totient is φ = 83048200.

The previous prime is 83878763. The next prime is 83878789. The reversal of 83878783 is 38787838.

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

It is a cyclic number.

It is not a de Polignac number, because 83878783 - 2¹⁷ = 83747711 is a prime.

It is a super-2 number, since 2×83878783² = 14071300475122178, which contains 22 as substring.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83878783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83878789) 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, 415141 + ... + 415342.

It is an arithmetic number, because the mean of its divisors is an integer number (21177342).

Almost surely, 2^83878783 is an apocalyptic number.

83878783 is a deficient number, since it is larger than the sum of its proper divisors (830585).

83878783 is a wasteful number, since it uses less digits than its factorization.

83878783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830584.

The product of its digits is 1806336, while the sum is 52.

The square root of 83878783 is about 9158.5360729759. The cubic root of 83878783 is about 437.7411490140.

The spelling of 83878783 in words is "eighty-three million, eight hundred seventy-eight thousand, seven hundred eighty-three".