1340002777 has 2 divisors, whose sum is σ = 1340002778. Its totient is φ = 1340002776.

The previous prime is 1340002723. The next prime is 1340002789. The reversal of 1340002777 is 7772000431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1122853081 + 217149696 = 33509^2 + 14736^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340002777 - 2¹⁹ = 1339478489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340009777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670001388 + 670001389.

It is an arithmetic number, because the mean of its divisors is an integer number (670001389).

Almost surely, 2^1340002777 is an apocalyptic number.

It is an amenable number.

1340002777 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340002777 is an equidigital number, since it uses as much as digits as its factorization.

1340002777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 1340002777 is about 36606.0483663561. The cubic root of 1340002777 is about 1102.4745330337.

The spelling of 1340002777 in words is "one billion, three hundred forty million, two thousand, seven hundred seventy-seven".