11870509 has 8 divisors (see below), whose sum is σ = 13592448. Its totient is φ = 10155120.

The previous prime is 11870503. The next prime is 11870587. The reversal of 11870509 is 90507811.

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

It is a cyclic number.

It is not a de Polignac number, because 11870509 - 2⁵ = 11870477 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 (11870503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3219 + ... + 5839.

It is an arithmetic number, because the mean of its divisors is an integer number (1699056).

Almost surely, 2^11870509 is an apocalyptic number.

It is an amenable number.

11870509 is a deficient number, since it is larger than the sum of its proper divisors (1721939).

11870509 is an equidigital number, since it uses as much as digits as its factorization.

11870509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 11870509 is about 3445.3605036338. The cubic root of 11870509 is about 228.1163674472.

The spelling of 11870509 in words is "eleven million, eight hundred seventy thousand, five hundred nine".