11930403 has 4 divisors (see below), whose sum is σ = 15907208. Its totient is φ = 7953600.

The previous prime is 11930363. The next prime is 11930407. The reversal of 11930403 is 30403911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30403911 = 3 ⋅10134637.

It is not a de Polignac number, because 11930403 - 2¹² = 11926307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11930403.

It is not an unprimeable number, because it can be changed into a prime (11930407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1988398 + ... + 1988403.

It is an arithmetic number, because the mean of its divisors is an integer number (3976802).

Almost surely, 2^11930403 is an apocalyptic number.

11930403 is a deficient number, since it is larger than the sum of its proper divisors (3976805).

11930403 is an equidigital number, since it uses as much as digits as its factorization.

11930403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976804.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 11930403 is about 3454.0415457837. The cubic root of 11930403 is about 228.4993863173.

The spelling of 11930403 in words is "eleven million, nine hundred thirty thousand, four hundred three".