11419989 has 12 divisors (see below), whose sum is σ = 17712864. Its totient is φ = 6525624.

The previous prime is 11419951. The next prime is 11419999. The reversal of 11419989 is 98991411.

It is a happy number.

It is not a de Polignac number, because 11419989 - 2⁷ = 11419861 is a prime.

It is a super-2 number, since 2×11419989² = 260832297520242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11419989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11419999) 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 11 ways as a sum of consecutive naturals, for example, 38697 + ... + 38990.

It is an arithmetic number, because the mean of its divisors is an integer number (1476072).

Almost surely, 2^11419989 is an apocalyptic number.

It is an amenable number.

11419989 is a deficient number, since it is larger than the sum of its proper divisors (6292875).

11419989 is an equidigital number, since it uses as much as digits as its factorization.

11419989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77704 (or 77697 counting only the distinct ones).

The product of its digits is 23328, while the sum is 42.

The square root of 11419989 is about 3379.3474222104. The cubic root of 11419989 is about 225.1931773070.

The spelling of 11419989 in words is "eleven million, four hundred nineteen thousand, nine hundred eighty-nine".