11399418 has 24 divisors (see below), whose sum is σ = 26152308. Its totient is φ = 3576192.

The previous prime is 11399389. The next prime is 11399471. The reversal of 11399418 is 81499311.

It can be written as a sum of positive squares in 2 ways, for example, as 8485569 + 2913849 = 2913^2 + 1707^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18321 + ... + 18932.

Almost surely, 2^11399418 is an apocalyptic number.

11399418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11399418 is an abundant number, since it is smaller than the sum of its proper divisors (14752890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11399418 is a wasteful number, since it uses less digits than its factorization.

11399418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37278 (or 37275 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 11399418 is about 3376.3024153651. The cubic root of 11399418 is about 225.0578814050.

The spelling of 11399418 in words is "eleven million, three hundred ninety-nine thousand, four hundred eighteen".