13403959 has 4 divisors (see below), whose sum is σ = 13413400. Its totient is φ = 13394520.

The previous prime is 13403893. The next prime is 13403969. The reversal of 13403959 is 95930431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13403959 - 2⁹ = 13403447 is a prime.

It is a super-2 number, since 2×13403959² = 359332233747362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13403969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2109 + ... + 5590.

It is an arithmetic number, because the mean of its divisors is an integer number (3353350).

Almost surely, 2^13403959 is an apocalyptic number.

13403959 is a deficient number, since it is larger than the sum of its proper divisors (9441).

13403959 is an equidigital number, since it uses as much as digits as its factorization.

13403959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9440.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 13403959 is about 3661.1417618005. The cubic root of 13403959 is about 237.5441631632.

The spelling of 13403959 in words is "thirteen million, four hundred three thousand, nine hundred fifty-nine".