11378209 has 8 divisors (see below), whose sum is σ = 11946240. Its totient is φ = 10822800.

The previous prime is 11378201. The next prime is 11378231. The reversal of 11378209 is 90287311.

11378209 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 11378209 - 2³ = 11378201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11378201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1282 + ... + 4939.

It is an arithmetic number, because the mean of its divisors is an integer number (1493280).

Almost surely, 2^11378209 is an apocalyptic number.

It is an amenable number.

11378209 is a deficient number, since it is larger than the sum of its proper divisors (568031).

11378209 is an equidigital number, since it uses as much as digits as its factorization.

11378209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6311.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 11378209 is about 3373.1600910719. The cubic root of 11378209 is about 224.9182188381.

The spelling of 11378209 in words is "eleven million, three hundred seventy-eight thousand, two hundred nine".