11190047 has 4 divisors (see below), whose sum is σ = 12207336. Its totient is φ = 10172760.

The previous prime is 11190043. The next prime is 11190061. The reversal of 11190047 is 74009111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74009111 = 11 ⋅6728101.

It is a cyclic number.

It is not a de Polignac number, because 11190047 - 2² = 11190043 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 (11190041) 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, 508628 + ... + 508649.

It is an arithmetic number, because the mean of its divisors is an integer number (3051834).

Almost surely, 2^11190047 is an apocalyptic number.

11190047 is a deficient number, since it is larger than the sum of its proper divisors (1017289).

11190047 is a wasteful number, since it uses less digits than its factorization.

11190047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017288.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 11190047 is about 3345.1527618332. The cubic root of 11190047 is about 223.6714931134.

Adding to 11190047 its reverse (74009111), we get a palindrome (85199158).

The spelling of 11190047 in words is "eleven million, one hundred ninety thousand, forty-seven".