11385921 has 8 divisors (see below), whose sum is σ = 15980320. Its totient is φ = 7191072.

The previous prime is 11385917. The next prime is 11385923. The reversal of 11385921 is 12958311.

11385921 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11385921 - 2² = 11385917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11385923) 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, 99820 + ... + 99933.

It is an arithmetic number, because the mean of its divisors is an integer number (1997540).

Almost surely, 2^11385921 is an apocalyptic number.

It is an amenable number.

11385921 is a deficient number, since it is larger than the sum of its proper divisors (4594399).

11385921 is a wasteful number, since it uses less digits than its factorization.

11385921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199775.

The product of its digits is 2160, while the sum is 30.

The square root of 11385921 is about 3374.3030391475. The cubic root of 11385921 is about 224.9690228959.

The spelling of 11385921 in words is "eleven million, three hundred eighty-five thousand, nine hundred twenty-one".