1289090 has 16 divisors (see below), whose sum is σ = 2531520. Its totient is φ = 468720.

The previous prime is 1289083. The next prime is 1289111. The reversal of 1289090 is 909821.

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, 5750 + ... + 5969.

It is an arithmetic number, because the mean of its divisors is an integer number (158220).

2^1289090 is an apocalyptic number.

1289090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1289090 is a deficient number, since it is larger than the sum of its proper divisors (1242430).

1289090 is a wasteful number, since it uses less digits than its factorization.

1289090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11737.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1289090 is about 1135.3809933234. The cubic root of 1289090 is about 108.8331200531.

The spelling of 1289090 in words is "one million, two hundred eighty-nine thousand, ninety".