1140609309 has 24 divisors (see below), whose sum is σ = 1770487488. Its totient is φ = 651268800.

The previous prime is 1140609277. The next prime is 1140609313. The reversal of 1140609309 is 9039060411.

It is not a de Polignac number, because 1140609309 - 2⁵ = 1140609277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1140609309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140609389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269409 + ... + 273609.

It is an arithmetic number, because the mean of its divisors is an integer number (73770312).

Almost surely, 2^1140609309 is an apocalyptic number.

It is an amenable number.

1140609309 is a deficient number, since it is larger than the sum of its proper divisors (629878179).

1140609309 is a wasteful number, since it uses less digits than its factorization.

1140609309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6065 (or 6058 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1140609309 is about 33772.9079144808. The cubic root of 1140609309 is about 1044.8300079858.

The spelling of 1140609309 in words is "one billion, one hundred forty million, six hundred nine thousand, three hundred nine".