93662981 has 2 divisors, whose sum is σ = 93662982. Its totient is φ = 93662980.

The previous prime is 93662939. The next prime is 93663007. The reversal of 93662981 is 18926639.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72420100 + 21242881 = 8510^2 + 4609^2 .

It is an emirp because it is prime and its reverse (18926639) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 93662981 - 2⁶ = 93662917 is a prime.

It is a super-2 number, since 2×93662981² = 17545508019612722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93662581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46831490 + 46831491.

It is an arithmetic number, because the mean of its divisors is an integer number (46831491).

Almost surely, 2^93662981 is an apocalyptic number.

It is an amenable number.

93662981 is a deficient number, since it is larger than the sum of its proper divisors (1).

93662981 is an equidigital number, since it uses as much as digits as its factorization.

93662981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 44.

The square root of 93662981 is about 9677.9636804444. The cubic root of 93662981 is about 454.1395500162.

The spelling of 93662981 in words is "ninety-three million, six hundred sixty-two thousand, nine hundred eighty-one".