1145909 has 8 divisors (see below), whose sum is σ = 1236480. Its totient is φ = 1058400.

The previous prime is 1145899. The next prime is 1145971. The reversal of 1145909 is 9095411.

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

It is a cyclic number.

It is not a de Polignac number, because 1145909 - 2¹² = 1141813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44 + ... + 1514.

It is an arithmetic number, because the mean of its divisors is an integer number (154560).

2^1145909 is an apocalyptic number.

1145909 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1145909 is a deficient number, since it is larger than the sum of its proper divisors (90571).

1145909 is a wasteful number, since it uses less digits than its factorization.

1145909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 1145909 is about 1070.4713914907. The cubic root of 1145909 is about 104.6445729846.

The spelling of 1145909 in words is "one million, one hundred forty-five thousand, nine hundred nine".