1209087 has 40 divisors (see below), whose sum is σ = 2090880. Its totient is φ = 689040.

The previous prime is 1209083. The next prime is 1209107. The reversal of 1209087 is 7809021.

It is not a de Polignac number, because 1209087 - 2² = 1209083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

1209087 is a lucky number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1209087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209083) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 20464 + ... + 20522.

It is an arithmetic number, because the mean of its divisors is an integer number (52272).

2^1209087 is an apocalyptic number.

1209087 is a deficient number, since it is larger than the sum of its proper divisors (881793).

1209087 is a wasteful number, since it uses less digits than its factorization.

1209087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1209087 is about 1099.5849216864. The cubic root of 1209087 is about 106.5334154220.

The spelling of 1209087 in words is "one million, two hundred nine thousand, eighty-seven".