83819147 has 4 divisors (see below), whose sum is σ = 84588240. Its totient is φ = 83050056.

The previous prime is 83819123. The next prime is 83819149. The reversal of 83819147 is 74191838.

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 83819147 - 2¹² = 83815051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83819149) 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, 384383 + ... + 384600.

It is an arithmetic number, because the mean of its divisors is an integer number (21147060).

Almost surely, 2^83819147 is an apocalyptic number.

83819147 is a deficient number, since it is larger than the sum of its proper divisors (769093).

83819147 is a wasteful number, since it uses less digits than its factorization.

83819147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769092.

The product of its digits is 48384, while the sum is 41.

The square root of 83819147 is about 9155.2797335745. The cubic root of 83819147 is about 437.6373829228.

The spelling of 83819147 in words is "eighty-three million, eight hundred nineteen thousand, one hundred forty-seven".