39821979283 has 4 divisors (see below), whose sum is σ = 39968924128. Its totient is φ = 39675034440.

The previous prime is 39821979277. The next prime is 39821979343. The reversal of 39821979283 is 38297912893.

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 39821979283 - 2⁹ = 39821978771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39821979383) 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, 73472016 + ... + 73472557.

It is an arithmetic number, because the mean of its divisors is an integer number (9992231032).

Almost surely, 2^39821979283 is an apocalyptic number.

39821979283 is a deficient number, since it is larger than the sum of its proper divisors (146944845).

39821979283 is a wasteful number, since it uses less digits than its factorization.

39821979283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146944844.

The product of its digits is 11757312, while the sum is 61.

The spelling of 39821979283 in words is "thirty-nine billion, eight hundred twenty-one million, nine hundred seventy-nine thousand, two hundred eighty-three".