1340707769 has 8 divisors (see below), whose sum is σ = 1368747072. Its totient is φ = 1312770160.

The previous prime is 1340707757. The next prime is 1340707777. The reversal of 1340707769 is 9677070431.

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 1340707769 - 2²⁰ = 1339659193 is a prime.

It is a super-2 number, since 2×1340707769² = 3594994643713914722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340707169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1514 + ... + 51804.

It is an arithmetic number, because the mean of its divisors is an integer number (171093384).

Almost surely, 2^1340707769 is an apocalyptic number.

It is an amenable number.

1340707769 is a deficient number, since it is larger than the sum of its proper divisors (28039303).

1340707769 is an equidigital number, since it uses as much as digits as its factorization.

1340707769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50847.

The product of its (nonzero) digits is 222264, while the sum is 44.

The square root of 1340707769 is about 36615.6765470748. The cubic root of 1340707769 is about 1102.6678409568.

The spelling of 1340707769 in words is "one billion, three hundred forty million, seven hundred seven thousand, seven hundred sixty-nine".