11409839 has 8 divisors (see below), whose sum is σ = 13807008. Its totient is φ = 9204480.

The previous prime is 11409821. The next prime is 11409841. The reversal of 11409839 is 93890411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11409839 - 2⁸ = 11409583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11409799 and 11409808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11403839) 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, 47822 + ... + 48059.

It is an arithmetic number, because the mean of its divisors is an integer number (1725876).

Almost surely, 2^11409839 is an apocalyptic number.

11409839 is a deficient number, since it is larger than the sum of its proper divisors (2397169).

11409839 is an equidigital number, since it uses as much as digits as its factorization.

11409839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95905.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 11409839 is about 3377.8453191347. The cubic root of 11409839 is about 225.1264408662.

The spelling of 11409839 in words is "eleven million, four hundred nine thousand, eight hundred thirty-nine".