11289999 has 16 divisors (see below), whose sum is σ = 17263872. Its totient is φ = 6428928.

The previous prime is 11289979. The next prime is 11290003. The reversal of 11289999 is 99998211.

11289999 is digitally balanced in base 2, base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11289999 - 2⁷ = 11289871 is a prime.

11289999 is a modest number, since divided by 9999 gives 1128 as remainder.

11289999 is strictly pandigital in base 8.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11289959) 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, 6652 + ... + 8174.

It is an arithmetic number, because the mean of its divisors is an integer number (1078992).

Almost surely, 2^11289999 is an apocalyptic number.

11289999 is a deficient number, since it is larger than the sum of its proper divisors (5973873).

11289999 is a wasteful number, since it uses less digits than its factorization.

11289999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886.

The product of its digits is 104976, while the sum is 48.

The square root of 11289999 is about 3360.0593744754. The cubic root of 11289999 is about 224.3354813070.

The spelling of 11289999 in words is "eleven million, two hundred eighty-nine thousand, nine hundred ninety-nine".