1209069 has 6 divisors (see below), whose sum is σ = 1746446. Its totient is φ = 806040.

The previous prime is 1209053. The next prime is 1209073. The reversal of 1209069 is 9609021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1127844 + 81225 = 1062^2 + 285^2 .

It is not a de Polignac number, because 1209069 - 2⁴ = 1209053 is a prime.

It is a super-2 number, since 2×1209069² = 2923695693522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67162 + ... + 67179.

2^1209069 is an apocalyptic number.

It is an amenable number.

1209069 is a deficient number, since it is larger than the sum of its proper divisors (537377).

1209069 is a wasteful number, since it uses less digits than its factorization.

1209069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134347 (or 134344 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1209069 is about 1099.5767367492. The cubic root of 1209069 is about 106.5328867557.

The spelling of 1209069 in words is "one million, two hundred nine thousand, sixty-nine".