11933889 has 16 divisors (see below), whose sum is σ = 17531904. Its totient is φ = 7160400.

The previous prime is 11933879. The next prime is 11933903. The reversal of 11933889 is 98833911.

It is a happy number.

It is not a de Polignac number, because 11933889 - 2⁸ = 11933633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11933889.

It is not an unprimeable number, because it can be changed into a prime (11933879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1644 + ... + 5154.

It is an arithmetic number, because the mean of its divisors is an integer number (1095744).

Almost surely, 2^11933889 is an apocalyptic number.

It is an amenable number.

11933889 is a deficient number, since it is larger than the sum of its proper divisors (5598015).

11933889 is a wasteful number, since it uses less digits than its factorization.

11933889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3628.

The product of its digits is 46656, while the sum is 42.

The square root of 11933889 is about 3454.5461351674. The cubic root of 11933889 is about 228.5216395832.

The spelling of 11933889 in words is "eleven million, nine hundred thirty-three thousand, eight hundred eighty-nine".