1290189 has 8 divisors (see below), whose sum is σ = 1775872. Its totient is φ = 832320.

The previous prime is 1290173. The next prime is 1290199. The reversal of 1290189 is 9810921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1290189 - 2⁴ = 1290173 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

1290189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6844 + ... + 7029.

It is an arithmetic number, because the mean of its divisors is an integer number (221984).

2^1290189 is an apocalyptic number.

It is an amenable number.

1290189 is a deficient number, since it is larger than the sum of its proper divisors (485683).

1290189 is a wasteful number, since it uses less digits than its factorization.

1290189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13907.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 1290189 is about 1135.8648687234. The cubic root of 1290189 is about 108.8640394419.

The spelling of 1290189 in words is "one million, two hundred ninety thousand, one hundred eighty-nine".