13206399 has 8 divisors (see below), whose sum is σ = 18644400. Its totient is φ = 8286336.

The previous prime is 13206377. The next prime is 13206407. The reversal of 13206399 is 99360231.

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

It is not a de Polignac number, because 13206399 - 2⁵ = 13206367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13206329) 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, 129424 + ... + 129525.

It is an arithmetic number, because the mean of its divisors is an integer number (2330550).

Almost surely, 2^13206399 is an apocalyptic number.

13206399 is a deficient number, since it is larger than the sum of its proper divisors (5438001).

13206399 is a wasteful number, since it uses less digits than its factorization.

13206399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258969.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 13206399 is about 3634.0609516077. The cubic root of 13206399 is about 236.3713332127.

The spelling of 13206399 in words is "thirteen million, two hundred six thousand, three hundred ninety-nine".