9493981 has 8 divisors (see below), whose sum is σ = 10912320. Its totient is φ = 8091168.

The previous prime is 9493961. The next prime is 9493999. The reversal of 9493981 is 1893949.

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

It is a cyclic number.

It is not a de Polignac number, because 9493981 - 2⁵ = 9493949 is a prime.

It is a super-2 number, since 2×9493981² = 180271350456722, 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 (9493951) 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, 2536 + ... + 5041.

It is an arithmetic number, because the mean of its divisors is an integer number (1364040).

Almost surely, 2^9493981 is an apocalyptic number.

It is an amenable number.

9493981 is a deficient number, since it is larger than the sum of its proper divisors (1418339).

9493981 is a wasteful number, since it uses less digits than its factorization.

9493981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7763.

The product of its digits is 69984, while the sum is 43.

The square root of 9493981 is about 3081.2304360434. The cubic root of 9493981 is about 211.7464409522.

The spelling of 9493981 in words is "nine million, four hundred ninety-three thousand, nine hundred eighty-one".