1002106439 has 2 divisors, whose sum is σ = 1002106440. Its totient is φ = 1002106438.

The previous prime is 1002106421. The next prime is 1002106451. The reversal of 1002106439 is 9346012001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002106439 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002106459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501053219 + 501053220.

It is an arithmetic number, because the mean of its divisors is an integer number (501053220).

Almost surely, 2^1002106439 is an apocalyptic number.

1002106439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002106439 is an equidigital number, since it uses as much as digits as its factorization.

1002106439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1002106439 is about 31656.0648059736. The cubic root of 1002106439 is about 1000.7016539000.

The spelling of 1002106439 in words is "one billion, two million, one hundred six thousand, four hundred thirty-nine".