11409621 has 8 divisors (see below), whose sum is σ = 15277440. Its totient is φ = 7574112.

The previous prime is 11409617. The next prime is 11409637. The reversal of 11409621 is 12690411.

11409621 is digitally balanced in base 2, because in such base 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 11409621 - 2² = 11409617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11409591 and 11409600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11409611) 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, 7240 + ... + 8673.

It is an arithmetic number, because the mean of its divisors is an integer number (1909680).

Almost surely, 2^11409621 is an apocalyptic number.

It is an amenable number.

11409621 is a deficient number, since it is larger than the sum of its proper divisors (3867819).

11409621 is a wasteful number, since it uses less digits than its factorization.

11409621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16155.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 11409621 is about 3377.8130498889. The cubic root of 11409621 is about 225.1250070780.

The spelling of 11409621 in words is "eleven million, four hundred nine thousand, six hundred twenty-one".