11404621 has 16 divisors (see below), whose sum is σ = 12364288. Its totient is φ = 10497600.

The previous prime is 11404567. The next prime is 11404633. The reversal of 11404621 is 12640411.

It is a 4-Lehmer number, since φ(11404621) divides (11404621-1)⁴.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11404621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11404661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69886 + ... + 70048.

It is an arithmetic number, because the mean of its divisors is an integer number (772768).

Almost surely, 2^11404621 is an apocalyptic number.

It is an amenable number.

11404621 is a deficient number, since it is larger than the sum of its proper divisors (959667).

11404621 is a wasteful number, since it uses less digits than its factorization.

11404621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 11404621 is about 3377.0728449354. The cubic root of 11404621 is about 225.0921170138.

The spelling of 11404621 in words is "eleven million, four hundred four thousand, six hundred twenty-one".