1394442523 has 2 divisors, whose sum is σ = 1394442524. Its totient is φ = 1394442522.

The previous prime is 1394442499. The next prime is 1394442541. The reversal of 1394442523 is 3252444931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1394442523 - 2⁹ = 1394442011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1394442823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697221261 + 697221262.

It is an arithmetic number, because the mean of its divisors is an integer number (697221262).

Almost surely, 2^1394442523 is an apocalyptic number.

1394442523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1394442523 is an equidigital number, since it uses as much as digits as its factorization.

1394442523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 37.

The square root of 1394442523 is about 37342.2351098592. The cubic root of 1394442523 is about 1117.2067199952.

The spelling of 1394442523 in words is "one billion, three hundred ninety-four million, four hundred forty-two thousand, five hundred twenty-three".