11424939409 has 4 divisors (see below), whose sum is σ = 12303780916. Its totient is φ = 10546097904.

The previous prime is 11424939401. The next prime is 11424939413. The reversal of 11424939409 is 90493942411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90493942411 = 17 ⋅5323173083.

It can be written as a sum of positive squares in 2 ways, for example, as 4555845009 + 6869094400 = 67497^2 + 82880^2 .

It is a cyclic number.

It is not a de Polignac number, because 11424939409 - 2³ = 11424939401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11424939401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439420734 + ... + 439420759.

It is an arithmetic number, because the mean of its divisors is an integer number (3075945229).

Almost surely, 2^11424939409 is an apocalyptic number.

It is an amenable number.

11424939409 is a deficient number, since it is larger than the sum of its proper divisors (878841507).

11424939409 is an equidigital number, since it uses as much as digits as its factorization.

11424939409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878841506.

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 11424939409 in words is "eleven billion, four hundred twenty-four million, nine hundred thirty-nine thousand, four hundred nine".