11947469 has 4 divisors (see below), whose sum is σ = 11954880. Its totient is φ = 11940060.

The previous prime is 11947433. The next prime is 11947471. The reversal of 11947469 is 96474911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11947469 - 2⁸ = 11947213 is a prime.

It is a super-2 number, since 2×11947469² = 285484031011922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11947489) 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, 149 + ... + 4890.

It is an arithmetic number, because the mean of its divisors is an integer number (2988720).

Almost surely, 2^11947469 is an apocalyptic number.

It is an amenable number.

11947469 is a deficient number, since it is larger than the sum of its proper divisors (7411).

11947469 is an equidigital number, since it uses as much as digits as its factorization.

11947469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7410.

The product of its digits is 54432, while the sum is 41.

The square root of 11947469 is about 3456.5111022533. The cubic root of 11947469 is about 228.6082877128.

The spelling of 11947469 in words is "eleven million, nine hundred forty-seven thousand, four hundred sixty-nine".