1290447 has 12 divisors (see below), whose sum is σ = 1880320. Its totient is φ = 852768.

The previous prime is 1290439. The next prime is 1290463. The reversal of 1290447 is 7440921.

It is a happy number.

It is not a de Polignac number, because 1290447 - 2³ = 1290439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1290447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 579 + ... + 1707.

2^1290447 is an apocalyptic number.

1290447 is a deficient number, since it is larger than the sum of its proper divisors (589873).

1290447 is a wasteful number, since it uses less digits than its factorization.

1290447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262 (or 1259 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1290447 is about 1135.9784328939. The cubic root of 1290447 is about 108.8712954978.

The spelling of 1290447 in words is "one million, two hundred ninety thousand, four hundred forty-seven".