1189039 has 4 divisors (see below), whose sum is σ = 1251640. Its totient is φ = 1126440.

The previous prime is 1189033. The next prime is 1189057. The reversal of 1189039 is 9309811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1189039 - 2⁵ = 1189007 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1189039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189033) 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, 31272 + ... + 31309.

It is an arithmetic number, because the mean of its divisors is an integer number (312910).

2^1189039 is an apocalyptic number.

1189039 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1189039 is a deficient number, since it is larger than the sum of its proper divisors (62601).

1189039 is an equidigital number, since it uses as much as digits as its factorization.

1189039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62600.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 1189039 is about 1090.4306488723. The cubic root of 1189039 is about 105.9413167526.

The spelling of 1189039 in words is "one million, one hundred eighty-nine thousand, thirty-nine".