1290984 has 16 divisors (see below), whose sum is σ = 3227520. Its totient is φ = 430320.

The previous prime is 1290983. The next prime is 1291001. The reversal of 1290984 is 4890921.

It is not an unprimeable number, because it can be changed into a prime (1290983) 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 3 ways as a sum of consecutive naturals, for example, 26872 + ... + 26919.

It is an arithmetic number, because the mean of its divisors is an integer number (201720).

2^1290984 is an apocalyptic number.

It is an amenable number.

1290984 is an abundant number, since it is smaller than the sum of its proper divisors (1936536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1290984 is a wasteful number, since it uses less digits than its factorization.

1290984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53800 (or 53796 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1290984 is about 1136.2147684307. The cubic root of 1290984 is about 108.8863951177.

The spelling of 1290984 in words is "one million, two hundred ninety thousand, nine hundred eighty-four".