83939239994 has 4 divisors (see below), whose sum is σ = 125908859994. Its totient is φ = 41969619996.

The previous prime is 83939239973. The next prime is 83939240009. The reversal of 83939239994 is 49993293938.

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

It can be written as a sum of positive squares in only one way, i.e., 47879128969 + 36060111025 = 218813^2 + 189895^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20984809997 + ... + 20984810000.

Almost surely, 2^83939239994 is an apocalyptic number.

83939239994 is a deficient number, since it is larger than the sum of its proper divisors (41969620000).

83939239994 is a wasteful number, since it uses less digits than its factorization.

83939239994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41969619999.

The product of its digits is 102036672, while the sum is 68.

The spelling of 83939239994 in words is "eighty-three billion, nine hundred thirty-nine million, two hundred thirty-nine thousand, nine hundred ninety-four".