1393857029 has 2 divisors, whose sum is σ = 1393857030. Its totient is φ = 1393857028.

The previous prime is 1393856987. The next prime is 1393857037. The reversal of 1393857029 is 9207583931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1251532129 + 142324900 = 35377^2 + 11930^2 .

It is a cyclic number.

It is not a de Polignac number, because 1393857029 - 2⁸ = 1393856773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1393857089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696928514 + 696928515.

It is an arithmetic number, because the mean of its divisors is an integer number (696928515).

Almost surely, 2^1393857029 is an apocalyptic number.

It is an amenable number.

1393857029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393857029 is an equidigital number, since it uses as much as digits as its factorization.

1393857029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 1393857029 is about 37334.3947185434. The cubic root of 1393857029 is about 1117.0503350621.

The spelling of 1393857029 in words is "one billion, three hundred ninety-three million, eight hundred fifty-seven thousand, twenty-nine".