13405992 has 16 divisors (see below), whose sum is σ = 33515040. Its totient is φ = 4468656.

The previous prime is 13405991. The next prime is 13405999. The reversal of 13405992 is 29950431.

It is not an unprimeable number, because it can be changed into a prime (13405991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279268 + ... + 279315.

It is an arithmetic number, because the mean of its divisors is an integer number (2094690).

Almost surely, 2^13405992 is an apocalyptic number.

13405992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13405992 is an abundant number, since it is smaller than the sum of its proper divisors (20109048).

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

13405992 is a wasteful number, since it uses less digits than its factorization.

13405992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558592 (or 558588 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 13405992 is about 3661.4193969006. The cubic root of 13405992 is about 237.5561721243.

The spelling of 13405992 in words is "thirteen million, four hundred five thousand, nine hundred ninety-two".