11279643 has 4 divisors (see below), whose sum is σ = 15039528. Its totient is φ = 7519760.

The previous prime is 11279623. The next prime is 11279657. The reversal of 11279643 is 34697211.

11279643 is digitally balanced in base 2 and base 4, because in such bases 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 11279643 - 2¹² = 11275547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11279603) 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, 1879938 + ... + 1879943.

It is an arithmetic number, because the mean of its divisors is an integer number (3759882).

Almost surely, 2^11279643 is an apocalyptic number.

11279643 is a deficient number, since it is larger than the sum of its proper divisors (3759885).

11279643 is an equidigital number, since it uses as much as digits as its factorization.

11279643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3759884.

The product of its digits is 9072, while the sum is 33.

The square root of 11279643 is about 3358.5179767272. The cubic root of 11279643 is about 224.2668681050.

The spelling of 11279643 in words is "eleven million, two hundred seventy-nine thousand, six hundred forty-three".