11399140 has 12 divisors (see below), whose sum is σ = 23938236. Its totient is φ = 4559648.

The previous prime is 11399123. The next prime is 11399153. The reversal of 11399140 is 4199311.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3968064 + 7431076 = 1992^2 + 2726^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11399099 and 11399108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284959 + ... + 284998.

It is an arithmetic number, because the mean of its divisors is an integer number (1994853).

Almost surely, 2^11399140 is an apocalyptic number.

11399140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11399140 is an abundant number, since it is smaller than the sum of its proper divisors (12539096).

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

11399140 is a wasteful number, since it uses less digits than its factorization.

11399140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569966 (or 569964 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 11399140 is about 3376.2612458161. The cubic root of 11399140 is about 225.0560518788.

The spelling of 11399140 in words is "eleven million, three hundred ninety-nine thousand, one hundred forty".