11888705 has 4 divisors (see below), whose sum is σ = 14266452. Its totient is φ = 9510960.

The previous prime is 11888693. The next prime is 11888719. The reversal of 11888705 is 50788811.

It is a Cunningham number, because it is equal to 3448²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50788811 = 47 ⋅1080613.

It can be written as a sum of positive squares in 2 ways, for example, as 4276624 + 7612081 = 2068^2 + 2759^2 .

It is not a de Polignac number, because 11888705 - 2¹⁶ = 11823169 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188866 + ... + 1188875.

It is an arithmetic number, because the mean of its divisors is an integer number (3566613).

Almost surely, 2^11888705 is an apocalyptic number.

It is an amenable number.

11888705 is a deficient number, since it is larger than the sum of its proper divisors (2377747).

11888705 is an equidigital number, since it uses as much as digits as its factorization.

11888705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377746.

The product of its (nonzero) digits is 17920, while the sum is 38.

The square root of 11888705 is about 3448.0001450116. Note that the first 3 decimals coincide. The cubic root of 11888705 is about 228.2328658590.

The spelling of 11888705 in words is "eleven million, eight hundred eighty-eight thousand, seven hundred five".