1396700791 has 2 divisors, whose sum is σ = 1396700792. Its totient is φ = 1396700790.

The previous prime is 1396700779. The next prime is 1396700797. The reversal of 1396700791 is 1970076931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1396700791 - 2¹³ = 1396692599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1396700797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698350395 + 698350396.

It is an arithmetic number, because the mean of its divisors is an integer number (698350396).

Almost surely, 2^1396700791 is an apocalyptic number.

1396700791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396700791 is an equidigital number, since it uses as much as digits as its factorization.

1396700791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442, while the sum is 43.

The square root of 1396700791 is about 37372.4603284290. The cubic root of 1396700791 is about 1117.8094916914.

The spelling of 1396700791 in words is "one billion, three hundred ninety-six million, seven hundred thousand, seven hundred ninety-one".