11093981 has 4 divisors (see below), whose sum is σ = 11576352. Its totient is φ = 10611612.

The previous prime is 11093933. The next prime is 11093983. The reversal of 11093981 is 18939011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11093981 - 2⁶ = 11093917 is a prime.

It is a super-2 number, since 2×11093981² = 246152828856722, 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 (11093983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241151 + ... + 241196.

It is an arithmetic number, because the mean of its divisors is an integer number (2894088).

Almost surely, 2^11093981 is an apocalyptic number.

It is an amenable number.

11093981 is a deficient number, since it is larger than the sum of its proper divisors (482371).

11093981 is an equidigital number, since it uses as much as digits as its factorization.

11093981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482370.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 11093981 is about 3330.7628255401. The cubic root of 11093981 is about 223.0295831037.

The spelling of 11093981 in words is "eleven million, ninety-three thousand, nine hundred eighty-one".