1140344389 has 8 divisors (see below), whose sum is σ = 1168532640. Its totient is φ = 1112451600.

The previous prime is 1140344371. The next prime is 1140344407. The reversal of 1140344389 is 9834430411.

It is an interprime number because it is at equal distance from previous prime (1140344371) and next prime (1140344407).

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 1140344389 - 2²¹ = 1138247237 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 (1140344339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66042 + ... + 81499.

It is an arithmetic number, because the mean of its divisors is an integer number (146066580).

Almost surely, 2^1140344389 is an apocalyptic number.

It is an amenable number.

1140344389 is a deficient number, since it is larger than the sum of its proper divisors (28188251).

1140344389 is a wasteful number, since it uses less digits than its factorization.

1140344389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147731.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 1140344389 is about 33768.9856080990. The cubic root of 1140344389 is about 1044.7491103474.

The spelling of 1140344389 in words is "one billion, one hundred forty million, three hundred forty-four thousand, three hundred eighty-nine".