13699963 has 4 divisors (see below), whose sum is σ = 13715640. Its totient is φ = 13684288.

The previous prime is 13699957. The next prime is 13699981. The reversal of 13699963 is 36999631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13699963 - 2⁹ = 13699451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13699463) 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, 6445 + ... + 8302.

It is an arithmetic number, because the mean of its divisors is an integer number (3428910).

Almost surely, 2^13699963 is an apocalyptic number.

13699963 is a deficient number, since it is larger than the sum of its proper divisors (15677).

13699963 is an equidigital number, since it uses as much as digits as its factorization.

13699963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15676.

The product of its digits is 236196, while the sum is 46.

The square root of 13699963 is about 3701.3461064861. The cubic root of 13699963 is about 239.2800356607.

The spelling of 13699963 in words is "thirteen million, six hundred ninety-nine thousand, nine hundred sixty-three".