11838405 has 8 divisors (see below), whose sum is σ = 18941472. Its totient is φ = 6313808.

The previous prime is 11838397. The next prime is 11838413. The reversal of 11838405 is 50483811.

11838405 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 an interprime number because it is at equal distance from previous prime (11838397) and next prime (11838413).

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 11838405 - 2³ = 11838397 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394599 + ... + 394628.

It is an arithmetic number, because the mean of its divisors is an integer number (2367684).

Almost surely, 2^11838405 is an apocalyptic number.

11838405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11838405 is a deficient number, since it is larger than the sum of its proper divisors (7103067).

11838405 is an equidigital number, since it uses as much as digits as its factorization.

11838405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789235.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 11838405 is about 3440.6983302812. The cubic root of 11838405 is about 227.9105335347.

The spelling of 11838405 in words is "eleven million, eight hundred thirty-eight thousand, four hundred five".