1209164 has 12 divisors (see below), whose sum is σ = 2308488. Its totient is φ = 549600.

The previous prime is 1209163. The next prime is 1209181. The reversal of 1209164 is 4619021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13697 + ... + 13784.

It is an arithmetic number, because the mean of its divisors is an integer number (192374).

2^1209164 is an apocalyptic number.

It is an amenable number.

1209164 is a deficient number, since it is larger than the sum of its proper divisors (1099324).

1209164 is a wasteful number, since it uses less digits than its factorization.

1209164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27496 (or 27494 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1209164 is about 1099.6199343410. The cubic root of 1209164 is about 106.5356768802.

The spelling of 1209164 in words is "one million, two hundred nine thousand, one hundred sixty-four".