1393440143 has 2 divisors, whose sum is σ = 1393440144. Its totient is φ = 1393440142.

The previous prime is 1393440131. The next prime is 1393440149. The reversal of 1393440143 is 3410443931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1393440143 - 2⁴ = 1393440127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1393440149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696720071 + 696720072.

It is an arithmetic number, because the mean of its divisors is an integer number (696720072).

Almost surely, 2^1393440143 is an apocalyptic number.

1393440143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393440143 is an equidigital number, since it uses as much as digits as its factorization.

1393440143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1393440143 is about 37328.8111651041. The cubic root of 1393440143 is about 1116.9389584836.

The spelling of 1393440143 in words is "one billion, three hundred ninety-three million, four hundred forty thousand, one hundred forty-three".