93443981 has 8 divisors (see below), whose sum is σ = 96380160. Its totient is φ = 90529488.

The previous prime is 93443971. The next prime is 93443983. The reversal of 93443981 is 18934439.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-93443981 is a prime.

It is a super-2 number, since 2×93443981² = 17463555170256722, 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 (93443983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3560 + ... + 14126.

It is an arithmetic number, because the mean of its divisors is an integer number (12047520).

Almost surely, 2^93443981 is an apocalyptic number.

It is an amenable number.

93443981 is a deficient number, since it is larger than the sum of its proper divisors (2936179).

93443981 is a wasteful number, since it uses less digits than its factorization.

93443981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10843.

The product of its digits is 93312, while the sum is 41.

The square root of 93443981 is about 9666.6426953726. The cubic root of 93443981 is about 453.7853219220.

The spelling of 93443981 in words is "ninety-three million, four hundred forty-three thousand, nine hundred eighty-one".