1394724427 has 2 divisors, whose sum is σ = 1394724428. Its totient is φ = 1394724426.

The previous prime is 1394724403. The next prime is 1394724437. The reversal of 1394724427 is 7244274931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1394724427 is a prime.

It is not a weakly prime, because it can be changed into another prime (1394724437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697362213 + 697362214.

It is an arithmetic number, because the mean of its divisors is an integer number (697362214).

Almost surely, 2^1394724427 is an apocalyptic number.

1394724427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1394724427 is an equidigital number, since it uses as much as digits as its factorization.

1394724427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 43.

The square root of 1394724427 is about 37346.0095190905. The cubic root of 1394724427 is about 1117.2820006939.

The spelling of 1394724427 in words is "one billion, three hundred ninety-four million, seven hundred twenty-four thousand, four hundred twenty-seven".