83798981 has 8 divisors (see below), whose sum is σ = 95825664. Its totient is φ = 71786160.

The previous prime is 83798917. The next prime is 83799007. The reversal of 83798981 is 18989738.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83798981 - 2⁶ = 83798917 is a prime.

It is a super-2 number, since 2×83798981² = 14044538433276722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83798581) 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 7 ways as a sum of consecutive naturals, for example, 21611 + ... + 25191.

It is an arithmetic number, because the mean of its divisors is an integer number (11978208).

Almost surely, 2^83798981 is an apocalyptic number.

It is an amenable number.

83798981 is a deficient number, since it is larger than the sum of its proper divisors (12026683).

83798981 is a wasteful number, since it uses less digits than its factorization.

83798981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6931.

The product of its digits is 870912, while the sum is 53.

The square root of 83798981 is about 9154.1783356017. The cubic root of 83798981 is about 437.6022831330.

The spelling of 83798981 in words is "eighty-three million, seven hundred ninety-eight thousand, nine hundred eighty-one".