1090609 has 8 divisors (see below), whose sum is σ = 1202432. Its totient is φ = 982800.

The previous prime is 1090597. The next prime is 1090613. The reversal of 1090609 is 9060901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1090609 - 2⁵ = 1090577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1090409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417 + ... + 1534.

It is an arithmetic number, because the mean of its divisors is an integer number (150304).

2^1090609 is an apocalyptic number.

It is an amenable number.

1090609 is a deficient number, since it is larger than the sum of its proper divisors (111823).

1090609 is a wasteful number, since it uses less digits than its factorization.

1090609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 1090609 is about 1044.3222682678. The cubic root of 1090609 is about 102.9334096869.

The spelling of 1090609 in words is "one million, ninety thousand, six hundred nine".