1340879133 has 8 divisors (see below), whose sum is σ = 1950369696. Its totient is φ = 812654000.

The previous prime is 1340879117. The next prime is 1340879201. The reversal of 1340879133 is 3319780431.

It is a happy number.

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 1340879133 - 2⁴ = 1340879117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1340879091 and 1340879100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340879833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20316318 + ... + 20316383.

It is an arithmetic number, because the mean of its divisors is an integer number (243796212).

Almost surely, 2^1340879133 is an apocalyptic number.

It is an amenable number.

1340879133 is a deficient number, since it is larger than the sum of its proper divisors (609490563).

1340879133 is a wasteful number, since it uses less digits than its factorization.

1340879133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40632715.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 1340879133 is about 36618.0165082709. The cubic root of 1340879133 is about 1102.7148185126.

The spelling of 1340879133 in words is "one billion, three hundred forty million, eight hundred seventy-nine thousand, one hundred thirty-three".