11439043428 has 48 divisors (see below), whose sum is σ = 27188804160. Its totient is φ = 3742130304.

The previous prime is 11439043409. The next prime is 11439043439. The reversal of 11439043428 is 82434093411.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420826 + ... + 447182.

It is an arithmetic number, because the mean of its divisors is an integer number (566433420).

Almost surely, 2^11439043428 is an apocalyptic number.

It is an amenable number.

11439043428 is an abundant number, since it is smaller than the sum of its proper divisors (15749760732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11439043428 is a wasteful number, since it uses less digits than its factorization.

11439043428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27036 (or 27034 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 11439043428 in words is "eleven billion, four hundred thirty-nine million, forty-three thousand, four hundred twenty-eight".