1189439 has 16 divisors (see below), whose sum is σ = 1357056. Its totient is φ = 1036800.

The previous prime is 1189417. The next prime is 1189453. The reversal of 1189439 is 9349811.

It is a cyclic number.

It is not a de Polignac number, because 1189439 - 2¹² = 1185343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1189399 and 1189408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189469) 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 15 ways as a sum of consecutive naturals, for example, 19469 + ... + 19529.

It is an arithmetic number, because the mean of its divisors is an integer number (84816).

2^1189439 is an apocalyptic number.

1189439 is a deficient number, since it is larger than the sum of its proper divisors (167617).

1189439 is a wasteful number, since it uses less digits than its factorization.

1189439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146.

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

The square root of 1189439 is about 1090.6140472229. The cubic root of 1189439 is about 105.9531951900.

The spelling of 1189439 in words is "one million, one hundred eighty-nine thousand, four hundred thirty-nine".