1289164 has 12 divisors (see below), whose sum is σ = 2279088. Its totient is φ = 638000.

The previous prime is 1289159. The next prime is 1289179. The reversal of 1289164 is 4619821.

It is a happy number.

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1192 + ... + 1999.

It is an arithmetic number, because the mean of its divisors is an integer number (189924).

2^1289164 is an apocalyptic number.

It is an amenable number.

1289164 is a deficient number, since it is larger than the sum of its proper divisors (989924).

1289164 is a wasteful number, since it uses less digits than its factorization.

1289164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3296 (or 3294 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 1289164 is about 1135.4135810356. The cubic root of 1289164 is about 108.8352025290.

The spelling of 1289164 in words is "one million, two hundred eighty-nine thousand, one hundred sixty-four".