11389904 has 20 divisors (see below), whose sum is σ = 22349760. Its totient is φ = 5622240.

The previous prime is 11389897. The next prime is 11389907. The reversal of 11389904 is 40998311.

11389904 = T₄₉₇ + T₄₉₈ + ... + T₅₇₅.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11389907) 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 3 ways as a sum of consecutive naturals, for example, 3242 + ... + 5769.

It is an arithmetic number, because the mean of its divisors is an integer number (1117488).

Almost surely, 2^11389904 is an apocalyptic number.

It is an amenable number.

11389904 is a deficient number, since it is larger than the sum of its proper divisors (10959856).

11389904 is an equidigital number, since it uses as much as digits as its factorization.

11389904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9098 (or 9092 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 11389904 is about 3374.8931834948. The cubic root of 11389904 is about 224.9952525747.

The spelling of 11389904 in words is "eleven million, three hundred eighty-nine thousand, nine hundred four".