83499989879397 has 32 divisors (see below), whose sum is σ = 137026927082752. Its totient is φ = 44043531992064.

The previous prime is 83499989879393. The next prime is 83499989879407. The reversal of 83499989879397 is 79397898999438.

It is not a de Polignac number, because 83499989879397 - 2² = 83499989879393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83499989879393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28438863 + ... + 31237299.

It is an arithmetic number, because the mean of its divisors is an integer number (4282091471336).

Almost surely, 2^{83499989879397} is an apocalyptic number.

It is an amenable number.

83499989879397 is a deficient number, since it is larger than the sum of its proper divisors (53526937203355).

83499989879397 is a wasteful number, since it uses less digits than its factorization.

83499989879397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2907757.

The product of its digits is 479980505088, while the sum is 102.

The spelling of 83499989879397 in words is "eighty-three trillion, four hundred ninety-nine billion, nine hundred eighty-nine million, eight hundred seventy-nine thousand, three hundred ninety-seven".