11478091 has 4 divisors (see below), whose sum is σ = 11848384. Its totient is φ = 11107800.

The previous prime is 11478079. The next prime is 11478097. The reversal of 11478091 is 19087411.

11478091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11478091 - 2⁵ = 11478059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 370261 = 11478091 / (1 + 1 + 4 + 7 + 8 + 0 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11478097) 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, 185100 + ... + 185161.

It is an arithmetic number, because the mean of its divisors is an integer number (2962096).

Almost surely, 2^11478091 is an apocalyptic number.

11478091 is a deficient number, since it is larger than the sum of its proper divisors (370293).

11478091 is an equidigital number, since it uses as much as digits as its factorization.

11478091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370292.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 11478091 is about 3387.9331457394. The cubic root of 11478091 is about 225.5744399873.

The spelling of 11478091 in words is "eleven million, four hundred seventy-eight thousand, ninety-one".