11840347 has 4 divisors (see below), whose sum is σ = 12536856. Its totient is φ = 11143840.

The previous prime is 11840329. The next prime is 11840369. The reversal of 11840347 is 74304811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74304811 = 7 ⋅10614973.

It is not a de Polignac number, because 11840347 - 2⁷ = 11840219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11840317) 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, 348229 + ... + 348262.

It is an arithmetic number, because the mean of its divisors is an integer number (3134214).

Almost surely, 2^11840347 is an apocalyptic number.

11840347 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11840347 is a deficient number, since it is larger than the sum of its proper divisors (696509).

11840347 is an equidigital number, since it uses as much as digits as its factorization.

11840347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696508.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 11840347 is about 3440.9805288609. The cubic root of 11840347 is about 227.9229951813.

The spelling of 11840347 in words is "eleven million, eight hundred forty thousand, three hundred forty-seven".