1289495 has 8 divisors (see below), whose sum is σ = 1614816. Its totient is φ = 986656.

The previous prime is 1289459. The next prime is 1289513. The reversal of 1289495 is 5949821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1289495 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5492 + ... + 5721.

It is an arithmetic number, because the mean of its divisors is an integer number (201852).

2^1289495 is an apocalyptic number.

1289495 is a deficient number, since it is larger than the sum of its proper divisors (325321).

1289495 is a wasteful number, since it uses less digits than its factorization.

1289495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11241.

The product of its digits is 25920, while the sum is 38.

The square root of 1289495 is about 1135.5593335445. The cubic root of 1289495 is about 108.8445164124.

The spelling of 1289495 in words is "one million, two hundred eighty-nine thousand, four hundred ninety-five".