1402443389 has 2 divisors, whose sum is σ = 1402443390. Its totient is φ = 1402443388.

The previous prime is 1402443353. The next prime is 1402443401. The reversal of 1402443389 is 9833442041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1129632100 + 272811289 = 33610^2 + 16517^2 .

It is an emirp because it is prime and its reverse (9833442041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1402443389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1402443589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701221694 + 701221695.

It is an arithmetic number, because the mean of its divisors is an integer number (701221695).

Almost surely, 2^1402443389 is an apocalyptic number.

It is an amenable number.

1402443389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402443389 is an equidigital number, since it uses as much as digits as its factorization.

1402443389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 1402443389 is about 37449.2107927524. The cubic root of 1402443389 is about 1119.3393715145.

The spelling of 1402443389 in words is "one billion, four hundred two million, four hundred forty-three thousand, three hundred eighty-nine".