1159945 has 8 divisors (see below), whose sum is σ = 1404936. Its totient is φ = 919296.

The previous prime is 1159919. The next prime is 1159967. The reversal of 1159945 is 5499511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16 + 1159929 = 4^2 + 1077^2 .

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 1159945 - 2¹³ = 1151753 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1159945.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462 + ... + 1591.

It is an arithmetic number, because the mean of its divisors is an integer number (175617).

2^1159945 is an apocalyptic number.

It is an amenable number.

1159945 is a deficient number, since it is larger than the sum of its proper divisors (244991).

1159945 is a wasteful number, since it uses less digits than its factorization.

1159945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171.

The product of its digits is 8100, while the sum is 34.

The square root of 1159945 is about 1077.0074280152. The cubic root of 1159945 is about 105.0700968068.

The spelling of 1159945 in words is "one million, one hundred fifty-nine thousand, nine hundred forty-five".