1399765343 has 2 divisors, whose sum is σ = 1399765344. Its totient is φ = 1399765342.

The previous prime is 1399765313. The next prime is 1399765357. The reversal of 1399765343 is 3435679931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1399765343 - 2³⁰ = 326023519 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1399765291 and 1399765300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1399765313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699882671 + 699882672.

It is an arithmetic number, because the mean of its divisors is an integer number (699882672).

Almost surely, 2^1399765343 is an apocalyptic number.

1399765343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399765343 is an equidigital number, since it uses as much as digits as its factorization.

1399765343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1837080, while the sum is 50.

The square root of 1399765343 is about 37413.4380002694. The cubic root of 1399765343 is about 1118.6264366388.

The spelling of 1399765343 in words is "one billion, three hundred ninety-nine million, seven hundred sixty-five thousand, three hundred forty-three".