83893440931 has 2 divisors, whose sum is σ = 83893440932. Its totient is φ = 83893440930.

The previous prime is 83893440929. The next prime is 83893440991. The reversal of 83893440931 is 13904439838.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83893440931 - 2¹ = 83893440929 is a prime.

It is a super-2 number, since 2×83893440931² (a number of 23 digits) contains 22 as substring.

Together with 83893440929, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (83893440991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41946720465 + 41946720466.

It is an arithmetic number, because the mean of its divisors is an integer number (41946720466).

Almost surely, 2^83893440931 is an apocalyptic number.

83893440931 is a deficient number, since it is larger than the sum of its proper divisors (1).

83893440931 is an equidigital number, since it uses as much as digits as its factorization.

83893440931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 83893440931 in words is "eighty-three billion, eight hundred ninety-three million, four hundred forty thousand, nine hundred thirty-one".