11540399 has 16 divisors (see below), whose sum is σ = 13345920. Its totient is φ = 9884160.

The previous prime is 11540387. The next prime is 11540413. The reversal of 11540399 is 99304511.

11540399 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11540399 - 2⁸ = 11540143 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 (11540099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17129 + ... + 17789.

It is an arithmetic number, because the mean of its divisors is an integer number (834120).

Almost surely, 2^11540399 is an apocalyptic number.

11540399 is a deficient number, since it is larger than the sum of its proper divisors (1805521).

11540399 is a wasteful number, since it uses less digits than its factorization.

11540399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 11540399 is about 3397.1162770797. The cubic root of 11540399 is about 225.9818752270.

The spelling of 11540399 in words is "eleven million, five hundred forty thousand, three hundred ninety-nine".