11929471 has 4 divisors (see below), whose sum is σ = 12063600. Its totient is φ = 11795344.

The previous prime is 11929457. The next prime is 11929487. The reversal of 11929471 is 17492911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17492911 = 1907 ⋅9173.

It is a cyclic number.

It is not a de Polignac number, because 11929471 - 2⁵ = 11929439 is a prime.

It is a super-3 number, since 3×11929471³ (a number of 22 digits) contains 333 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 (11929171) 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, 66931 + ... + 67108.

It is an arithmetic number, because the mean of its divisors is an integer number (3015900).

Almost surely, 2^11929471 is an apocalyptic number.

11929471 is a deficient number, since it is larger than the sum of its proper divisors (134129).

11929471 is an equidigital number, since it uses as much as digits as its factorization.

11929471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134128.

The product of its digits is 4536, while the sum is 34.

The square root of 11929471 is about 3453.9066287322. The cubic root of 11929471 is about 228.4934360580.

The spelling of 11929471 in words is "eleven million, nine hundred twenty-nine thousand, four hundred seventy-one".