11841405 has 16 divisors (see below), whose sum is σ = 18996864. Its totient is φ = 6298560.

The previous prime is 11841397. The next prime is 11841409. The reversal of 11841405 is 50414811.

It is not a de Polignac number, because 11841405 - 2³ = 11841397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11841409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6495 + ... + 8115.

It is an arithmetic number, because the mean of its divisors is an integer number (1187304).

Almost surely, 2^11841405 is an apocalyptic number.

11841405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11841405 is a deficient number, since it is larger than the sum of its proper divisors (7155459).

11841405 is a wasteful number, since it uses less digits than its factorization.

11841405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116.

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 11841405 is about 3441.1342606763. The cubic root of 11841405 is about 227.9297837027.

It can be divided in two parts, 11841 and 405, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 11841405 in words is "eleven million, eight hundred forty-one thousand, four hundred five".