11916247 has 4 divisors (see below), whose sum is σ = 13618576. Its totient is φ = 10213920.

The previous prime is 11916241. The next prime is 11916251. The reversal of 11916247 is 74261911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74261911 = 1619 ⋅45869.

It is a cyclic number.

It is not a de Polignac number, because 11916247 - 2⁷ = 11916119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11916241) 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, 851154 + ... + 851167.

It is an arithmetic number, because the mean of its divisors is an integer number (3404644).

Almost surely, 2^11916247 is an apocalyptic number.

11916247 is a deficient number, since it is larger than the sum of its proper divisors (1702329).

11916247 is an equidigital number, since it uses as much as digits as its factorization.

11916247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702328.

The product of its digits is 3024, while the sum is 31.

The square root of 11916247 is about 3451.9917439067. The cubic root of 11916247 is about 228.4089753589.

The spelling of 11916247 in words is "eleven million, nine hundred sixteen thousand, two hundred forty-seven".