11409424391 has 2 divisors, whose sum is σ = 11409424392. Its totient is φ = 11409424390.

The previous prime is 11409424381. The next prime is 11409424423. The reversal of 11409424391 is 19342490411.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11409424391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11409424381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5704712195 + 5704712196.

It is an arithmetic number, because the mean of its divisors is an integer number (5704712196).

Almost surely, 2^11409424391 is an apocalyptic number.

11409424391 is a deficient number, since it is larger than the sum of its proper divisors (1).

11409424391 is an equidigital number, since it uses as much as digits as its factorization.

11409424391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 11409424391 in words is "eleven billion, four hundred nine million, four hundred twenty-four thousand, three hundred ninety-one".