11843421039 has 12 divisors (see below), whose sum is σ = 17108219856. Its totient is φ = 7895126592.

The previous prime is 11843421019. The next prime is 11843421049. The reversal of 11843421039 is 93012434811.

11843421039 is a `hidden beast` number, since 1 + 1 + 8 + 434 + 210 + 3 + 9 = 666.

It is not a de Polignac number, because 11843421039 - 2²³ = 11835032431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11843420994 and 11843421012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11843421019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171639 + ... + 230535.

It is an arithmetic number, because the mean of its divisors is an integer number (1425684988).

Almost surely, 2^11843421039 is an apocalyptic number.

11843421039 is a deficient number, since it is larger than the sum of its proper divisors (5264798817).

11843421039 is a wasteful number, since it uses less digits than its factorization.

11843421039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81246 (or 81243 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 11843421039 in words is "eleven billion, eight hundred forty-three million, four hundred twenty-one thousand, thirty-nine".