1396667243 has 2 divisors, whose sum is σ = 1396667244. Its totient is φ = 1396667242.

The previous prime is 1396667201. The next prime is 1396667269. The reversal of 1396667243 is 3427666931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1396667243 - 2⁶ = 1396667179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1396667843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698333621 + 698333622.

It is an arithmetic number, because the mean of its divisors is an integer number (698333622).

Almost surely, 2^1396667243 is an apocalyptic number.

1396667243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396667243 is an equidigital number, since it uses as much as digits as its factorization.

1396667243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 47.

The square root of 1396667243 is about 37372.0114925595. The cubic root of 1396667243 is about 1117.8005418927.

The spelling of 1396667243 in words is "one billion, three hundred ninety-six million, six hundred sixty-seven thousand, two hundred forty-three".