11802989 has 4 divisors (see below), whose sum is σ = 12876000. Its totient is φ = 10729980.

The previous prime is 11802977. The next prime is 11802991. The reversal of 11802989 is 98920811.

11802989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11802989 - 2²⁰ = 10754413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11802929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536489 + ... + 536510.

It is an arithmetic number, because the mean of its divisors is an integer number (3219000).

Almost surely, 2^11802989 is an apocalyptic number.

It is an amenable number.

11802989 is a deficient number, since it is larger than the sum of its proper divisors (1073011).

11802989 is a wasteful number, since it uses less digits than its factorization.

11802989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073010.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 11802989 is about 3435.5478456863. The cubic root of 11802989 is about 227.6830326738.

The spelling of 11802989 in words is "eleven million, eight hundred two thousand, nine hundred eighty-nine".