11404639 has 2 divisors, whose sum is σ = 11404640. Its totient is φ = 11404638.

The previous prime is 11404633. The next prime is 11404649. The reversal of 11404639 is 93640411.

It is a weak prime.

It is an emirp because it is prime and its reverse (93640411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11404639 - 2¹⁹ = 10880351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11404633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5702319 + 5702320.

It is an arithmetic number, because the mean of its divisors is an integer number (5702320).

Almost surely, 2^11404639 is an apocalyptic number.

11404639 is a deficient number, since it is larger than the sum of its proper divisors (1).

11404639 is an equidigital number, since it uses as much as digits as its factorization.

11404639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 11404639 is about 3377.0755099642. The cubic root of 11404639 is about 225.0922354353.

The spelling of 11404639 in words is "eleven million, four hundred four thousand, six hundred thirty-nine".