13361999 has 4 divisors (see below), whose sum is σ = 15270864. Its totient is φ = 11453136.

The previous prime is 13361977. The next prime is 13362007. The reversal of 13361999 is 99916331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99916331 = 557 ⋅179383.

It is a cyclic number.

It is not a de Polignac number, because 13361999 - 2¹⁶ = 13296463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13361939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 954422 + ... + 954435.

It is an arithmetic number, because the mean of its divisors is an integer number (3817716).

Almost surely, 2^13361999 is an apocalyptic number.

13361999 is a deficient number, since it is larger than the sum of its proper divisors (1908865).

13361999 is an equidigital number, since it uses as much as digits as its factorization.

13361999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908864.

The product of its digits is 39366, while the sum is 41.

The square root of 13361999 is about 3655.4068173050. The cubic root of 13361999 is about 237.2960331921.

The spelling of 13361999 in words is "thirteen million, three hundred sixty-one thousand, nine hundred ninety-nine".