1340814407 has 4 divisors (see below), whose sum is σ = 1342015896. Its totient is φ = 1339612920.

The previous prime is 1340814403. The next prime is 1340814421. The reversal of 1340814407 is 7044180431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1340814407 - 2² = 1340814403 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 (1340814403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599069 + ... + 601302.

It is an arithmetic number, because the mean of its divisors is an integer number (335503974).

Almost surely, 2^1340814407 is an apocalyptic number.

1340814407 is a deficient number, since it is larger than the sum of its proper divisors (1201489).

1340814407 is a wasteful number, since it uses less digits than its factorization.

1340814407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201488.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 1340814407 is about 36617.1326976867. The cubic root of 1340814407 is about 1102.6970750620.

Adding to 1340814407 its reverse (7044180431), we get a palindrome (8384994838).

The spelling of 1340814407 in words is "one billion, three hundred forty million, eight hundred fourteen thousand, four hundred seven".