1402989439 has 2 divisors, whose sum is σ = 1402989440. Its totient is φ = 1402989438.

The previous prime is 1402989407. The next prime is 1402989449. The reversal of 1402989439 is 9349892041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1402989439 - 2⁵ = 1402989407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1402989392 and 1402989401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1402989449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701494719 + 701494720.

It is an arithmetic number, because the mean of its divisors is an integer number (701494720).

Almost surely, 2^1402989439 is an apocalyptic number.

1402989439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402989439 is an equidigital number, since it uses as much as digits as its factorization.

1402989439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 1402989439 is about 37456.5006240572. The cubic root of 1402989439 is about 1119.4846265646.

The spelling of 1402989439 in words is "one billion, four hundred two million, nine hundred eighty-nine thousand, four hundred thirty-nine".