1439289487 has 2 divisors, whose sum is σ = 1439289488. Its totient is φ = 1439289486.

The previous prime is 1439289409. The next prime is 1439289521. The reversal of 1439289487 is 7849829341.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1439289487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1439289407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719644743 + 719644744.

It is an arithmetic number, because the mean of its divisors is an integer number (719644744).

Almost surely, 2^1439289487 is an apocalyptic number.

1439289487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1439289487 is an equidigital number, since it uses as much as digits as its factorization.

1439289487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 55.

The square root of 1439289487 is about 37937.9689361463. The cubic root of 1439289487 is about 1129.0574767877.

The spelling of 1439289487 in words is "one billion, four hundred thirty-nine million, two hundred eighty-nine thousand, four hundred eighty-seven".