83878427 has 4 divisors (see below), whose sum is σ = 84212856. Its totient is φ = 83544000.

The previous prime is 83878397. The next prime is 83878429. The reversal of 83878427 is 72487838.

It is a happy number.

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 83878427 - 2¹² = 83874331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83878429) 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 3 ways as a sum of consecutive naturals, for example, 166838 + ... + 167339.

It is an arithmetic number, because the mean of its divisors is an integer number (21053214).

Almost surely, 2^83878427 is an apocalyptic number.

83878427 is a deficient number, since it is larger than the sum of its proper divisors (334429).

83878427 is a wasteful number, since it uses less digits than its factorization.

83878427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334428.

The product of its digits is 602112, while the sum is 47.

The square root of 83878427 is about 9158.5166375347. The cubic root of 83878427 is about 437.7405297232.

The spelling of 83878427 in words is "eighty-three million, eight hundred seventy-eight thousand, four hundred twenty-seven".