93934472981 has 2 divisors, whose sum is σ = 93934472982. Its totient is φ = 93934472980.

The previous prime is 93934472917. The next prime is 93934472993. The reversal of 93934472981 is 18927443939.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88367074756 + 5567398225 = 297266^2 + 74615^2 .

It is an emirp because it is prime and its reverse (18927443939) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 93934472981 - 2⁶ = 93934472917 is a prime.

It is a super-2 number, since 2×93934472981² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 93934472981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93934474981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46967236490 + 46967236491.

It is an arithmetic number, because the mean of its divisors is an integer number (46967236491).

Almost surely, 2^93934472981 is an apocalyptic number.

It is an amenable number.

93934472981 is a deficient number, since it is larger than the sum of its proper divisors (1).

93934472981 is an equidigital number, since it uses as much as digits as its factorization.

93934472981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 59.

The spelling of 93934472981 in words is "ninety-three billion, nine hundred thirty-four million, four hundred seventy-two thousand, nine hundred eighty-one".