93493981 has 16 divisors (see below), whose sum is σ = 110073600. Its totient is φ = 77742720.

The previous prime is 93493979. The next prime is 93493993. The reversal of 93493981 is 18939439.

It is a cyclic number.

It is not a de Polignac number, because 93493981 - 2¹ = 93493979 is a prime.

It is a super-2 number, since 2×93493981² = 17482248966456722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93493901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56295 + ... + 57931.

It is an arithmetic number, because the mean of its divisors is an integer number (6879600).

Almost surely, 2^93493981 is an apocalyptic number.

It is an amenable number.

93493981 is a deficient number, since it is larger than the sum of its proper divisors (16579619).

93493981 is a wasteful number, since it uses less digits than its factorization.

93493981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884.

The product of its digits is 209952, while the sum is 46.

The square root of 93493981 is about 9669.2285628172. The cubic root of 93493981 is about 453.8662446317.

The spelling of 93493981 in words is "ninety-three million, four hundred ninety-three thousand, nine hundred eighty-one".