11989430 has 16 divisors (see below), whose sum is σ = 21621600. Its totient is φ = 4786752.

The previous prime is 11989423. The next prime is 11989451. The reversal of 11989430 is 3498911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7871 + ... + 9269.

It is an arithmetic number, because the mean of its divisors is an integer number (1351350).

Almost surely, 2^11989430 is an apocalyptic number.

11989430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11989430 is a deficient number, since it is larger than the sum of its proper divisors (9632170).

11989430 is a wasteful number, since it uses less digits than its factorization.

11989430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263.

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

The square root of 11989430 is about 3462.5756309430. The cubic root of 11989430 is about 228.8756086003.

The spelling of 11989430 in words is "eleven million, nine hundred eighty-nine thousand, four hundred thirty".