11761993 has 4 divisors (see below), whose sum is σ = 12273408. Its totient is φ = 11250580.

The previous prime is 11761991. The next prime is 11762027. The reversal of 11761993 is 39916711.

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 11761993 - 2¹ = 11761991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11761991) 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 in 3 ways as a sum of consecutive naturals, for example, 255673 + ... + 255718.

It is an arithmetic number, because the mean of its divisors is an integer number (3068352).

Almost surely, 2^11761993 is an apocalyptic number.

It is an amenable number.

11761993 is a deficient number, since it is larger than the sum of its proper divisors (511415).

11761993 is an equidigital number, since it uses as much as digits as its factorization.

11761993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511414.

The product of its digits is 10206, while the sum is 37.

The square root of 11761993 is about 3429.5762128870. The cubic root of 11761993 is about 227.4191186943.

The spelling of 11761993 in words is "eleven million, seven hundred sixty-one thousand, nine hundred ninety-three".