11699947 has 4 divisors (see below), whose sum is σ = 13371376. Its totient is φ = 10028520.

The previous prime is 11699921. The next prime is 11699957. The reversal of 11699947 is 74999611.

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 11699947 - 2⁷ = 11699819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11699897 and 11699906.

It is not an unprimeable number, because it can be changed into a prime (11699917) 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, 835704 + ... + 835717.

It is an arithmetic number, because the mean of its divisors is an integer number (3342844).

Almost surely, 2^11699947 is an apocalyptic number.

11699947 is a deficient number, since it is larger than the sum of its proper divisors (1671429).

11699947 is an equidigital number, since it uses as much as digits as its factorization.

11699947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671428.

The product of its digits is 122472, while the sum is 46.

The square root of 11699947 is about 3420.5185279428. The cubic root of 11699947 is about 227.0185252724.

The spelling of 11699947 in words is "eleven million, six hundred ninety-nine thousand, nine hundred forty-seven".