11987807 has 8 divisors (see below), whose sum is σ = 13471584. Its totient is φ = 10584288.

The previous prime is 11987783. The next prime is 11987837. The reversal of 11987807 is 70878911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11987807 - 2⁶ = 11987743 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 (11987837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19748 + ... + 20345.

It is an arithmetic number, because the mean of its divisors is an integer number (1683948).

Almost surely, 2^11987807 is an apocalyptic number.

11987807 is a deficient number, since it is larger than the sum of its proper divisors (1483777).

11987807 is a wasteful number, since it uses less digits than its factorization.

11987807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40129.

The product of its (nonzero) digits is 28224, while the sum is 41.

The square root of 11987807 is about 3462.3412598991. The cubic root of 11987807 is about 228.8652805620.

The spelling of 11987807 in words is "eleven million, nine hundred eighty-seven thousand, eight hundred seven".