1290989484 has 18 divisors (see below), whose sum is σ = 3263334620. Its totient is φ = 430329816.

The previous prime is 1290989477. The next prime is 1290989501. The reversal of 1290989484 is 4849890921.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 1290989484.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17930374 + ... + 17930445.

Almost surely, 2^1290989484 is an apocalyptic number.

It is an amenable number.

1290989484 is an abundant number, since it is smaller than the sum of its proper divisors (1972345136).

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

1290989484 is a wasteful number, since it uses less digits than its factorization.

1290989484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35860829 (or 35860824 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 1290989484 is about 35930.3421080290. The cubic root of 1290989484 is about 1088.8654929784.

The spelling of 1290989484 in words is "one billion, two hundred ninety million, nine hundred eighty-nine thousand, four hundred eighty-four".